web v12.3.0 (gridstack#3131)

* 📚 Sync Angular documentation with fixed Angular Guide link

- Synced latest Angular docs from master with corrected TypeDoc config
- Angular Guide link now properly points to index.html instead of broken README.md
- Updated sidebar navigation in all Angular documentation pages

This resolves the broken Angular Guide link issue in the Angular documentation.

* web v12.3.0

* also remove unused files

Author: adumesny

.prettierignore

@@ -1,4 +1,3 @@
 ./demo
-./freelancer
 ./logo
 **/node_modules

angular/doc/html/classes/base-widget.BaseWidget.html

@@ -19,4 +19,4 @@
 
 </div></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/adumesny/gridstack.js/blob/master/angular/projects/lib/src/lib/base-widget.ts#L88">angular/projects/lib/src/lib/base-widget.ts:88</a></li></ul></aside></div></li></ul></section></section></details><details class="tsd-panel-group tsd-member-group tsd-accordion" open><summary class="tsd-accordion-summary" data-key="section-Properties"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg><h2>Properties</h2></summary><section><section class="tsd-panel tsd-member"><h3 class="tsd-anchor-link" id="widgetitem"><code class="tsd-tag">Optional</code><span>widget<wbr/>Item</span><a href="#widgetitem" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">widgetItem</span><span class="tsd-signature-symbol">?:</span> <a href="../interfaces/types.NgGridStackWidget.html" class="tsd-signature-type tsd-kind-interface">NgGridStackWidget</a></div><div class="tsd-comment tsd-typography"><p>Complete widget definition including position, size, and Angular-specific data.
 Populated automatically when the widget is loaded or saved.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/adumesny/gridstack.js/blob/master/angular/projects/lib/src/lib/base-widget.ts#L45">angular/projects/lib/src/lib/base-widget.ts:45</a></li></ul></aside></section></section></details></div><div class="col-sidebar"><div class="page-menu"><div class="tsd-navigation settings"><details class="tsd-accordion"><summary class="tsd-accordion-summary"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg><h3>Settings</h3></summary><div class="tsd-accordion-details"><div class="tsd-filter-visibility"><span class="settings-label">Member Visibility</span><ul id="tsd-filter-options"><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-protected" name="protected"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Protected</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-inherited" name="inherited" checked/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Inherited</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-external" name="external"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>External</span></label></li></ul></div><div class="tsd-theme-toggle"><label class="settings-label" for="tsd-theme">Theme</label><select id="tsd-theme"><option value="os">OS</option><option value="light">Light</option><option value="dark">Dark</option></select></div></div></details></div><details open class="tsd-accordion tsd-page-navigation"><summary class="tsd-accordion-summary"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg><h3>On This Page</h3></summary><div class="tsd-accordion-details"><details open class="tsd-accordion tsd-page-navigation-section"><summary class="tsd-accordion-summary" data-key="section-Constructors"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Constructors</summary><div><a href="#constructor"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Constructor"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a></div></details><details open class="tsd-accordion tsd-page-navigation-section"><summary class="tsd-accordion-summary" data-key="section-Methods"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Methods</summary><div><a href="#serialize"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Method"><use href="../assets/icons.svg#icon-2048"></use></svg><span>serialize</span></a><a href="#deserialize"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Method"><use href="../assets/icons.svg#icon-2048"></use></svg><span>deserialize</span></a></div></details><details open class="tsd-accordion tsd-page-navigation-section"><summary class="tsd-accordion-summary" data-key="section-Properties"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Properties</summary><div><a href="#widgetitem"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Property"><use href="../assets/icons.svg#icon-1024"></use></svg><span>widget<wbr/>Item</span></a></div></details></div></details></div><div class="site-menu"><nav id="tsd-sidebar-links" class="tsd-navigation"><a href="https://github.com/gridstack/gridstack.js/tree/master/doc">Documentation</a><a href="README.md">Angular Guide</a><a href="https://github.com/gridstack/gridstack.js" class="tsd-nav-link">GitHub</a><a href="https://gridstackjs.com/demo/" class="tsd-nav-link">Demo</a><a href="../../../doc/html/" class="tsd-nav-link">Main Library</a></nav><nav class="tsd-navigation"><a href="../modules.html">GridStack Angular Library</a><ul class="tsd-small-nested-navigation" id="tsd-nav-container"><li>Loading...</li></ul></nav></div></div></div><footer><p class="tsd-generator">Generated using <a href="https://typedoc.org/" target="_blank">TypeDoc</a></p></footer><div class="overlay"></div></body></html>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/adumesny/gridstack.js/blob/master/angular/projects/lib/src/lib/base-widget.ts#L45">angular/projects/lib/src/lib/base-widget.ts:45</a></li></ul></aside></section></section></details></div><div class="col-sidebar"><div class="page-menu"><div class="tsd-navigation settings"><details class="tsd-accordion"><summary class="tsd-accordion-summary"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg><h3>Settings</h3></summary><div class="tsd-accordion-details"><div class="tsd-filter-visibility"><span class="settings-label">Member Visibility</span><ul id="tsd-filter-options"><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-protected" name="protected"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Protected</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-inherited" name="inherited" checked/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Inherited</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-external" name="external"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>External</span></label></li></ul></div><div class="tsd-theme-toggle"><label class="settings-label" for="tsd-theme">Theme</label><select id="tsd-theme"><option value="os">OS</option><option value="light">Light</option><option value="dark">Dark</option></select></div></div></details></div><details open class="tsd-accordion tsd-page-navigation"><summary class="tsd-accordion-summary"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg><h3>On This Page</h3></summary><div class="tsd-accordion-details"><details open class="tsd-accordion tsd-page-navigation-section"><summary class="tsd-accordion-summary" data-key="section-Constructors"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Constructors</summary><div><a href="#constructor"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Constructor"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a></div></details><details open class="tsd-accordion tsd-page-navigation-section"><summary class="tsd-accordion-summary" data-key="section-Methods"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Methods</summary><div><a href="#serialize"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Method"><use href="../assets/icons.svg#icon-2048"></use></svg><span>serialize</span></a><a href="#deserialize"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Method"><use href="../assets/icons.svg#icon-2048"></use></svg><span>deserialize</span></a></div></details><details open class="tsd-accordion tsd-page-navigation-section"><summary class="tsd-accordion-summary" data-key="section-Properties"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Properties</summary><div><a href="#widgetitem"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Property"><use href="../assets/icons.svg#icon-1024"></use></svg><span>widget<wbr/>Item</span></a></div></details></div></details></div><div class="site-menu"><nav id="tsd-sidebar-links" class="tsd-navigation"><a href="https://github.com/gridstack/gridstack.js/tree/master/doc">Documentation</a><a href="index.html">Angular Guide</a><a href="https://github.com/gridstack/gridstack.js" class="tsd-nav-link">GitHub</a><a href="https://gridstackjs.com/demo/" class="tsd-nav-link">Demo</a><a href="../../../doc/html/" 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