feat: use pydata_sphinx_theme instead

Try using pydata_sphinx_theme since it's got more community momentum at
the moment.

Signed-off-by: Randolph Sapp <rs@ti.com>

Author: StaticRocket

_static/css/custom.css

@@ -0,0 +1,7 @@
+.bd-main .bd-content .bd-article-container {
+  max-width: 100%;
+}
+
+.bd-page-width {
+  max-width: 100%;
+}

_static/css/theme_overrides.css

@@ -1,24 +1,5 @@
 {% extends "!layout.html" %}
-{%- block extrahead %} 
+{%- block extrahead %}
   <script src="https://www.ti.com/assets/js/headerfooter/analytics.js" type="text/javascript" charset="utf-8"></script>
   {{ super() }}
 {% endblock %}
-{%- block sidebartitle %}
-  {# the logo helper function was removed in Sphinx 6 and deprecated since Sphinx 4 #}
-  {# the master_doc variable was renamed to root_doc in Sphinx 4 (master_doc still exists in later Sphinx versions) #}
-  {%- set _logo_url = logo_url|default(pathto('_static/' + (logo or ""), 1)) %}
-  {%- set _root_doc = root_doc|default(master_doc) %}
-  <a href="{{ pathto(_root_doc) }}"{% if not theme_logo_only %} class="icon icon-home"{% endif %}>
-    {% if not theme_logo_only %}{{ project }}{% endif %}
-    {%- if logo or logo_url %}
-      <img src="{{ _logo_url }}" class="logo" alt="{{ _('Logo') }}"/>
-    {%- endif %}
-  </a>
-  {%- set nav_version = version %}
-  {%- if nav_version %}
-    <div class="version">
-      {{ nav_version }}
-    </div>
-  {%- endif %}
-  {%- include "searchbox.html" %}
-{% endblock %}