brand: refresh logo kit, README header, and docs logo/favicon

Add the full brand kit under resources/brand/, regenerate the CLI
app icon (multi-size .ico), swap the README header for the new banner,
and wire the new logo + favicon into the Sphinx docs.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: sunnamed434

README.md

@@ -1,6 +1,5 @@
 <p align="center">
-  <img src="https://raw.githubusercontent.com/sunnamed434/BitMono/main/resources/logo/BitMonoLogo.png" alt="BitMono logo" width="180" /><br>
-  Free open-source obfuscator that targeting Mono and whole .NET<br>
+  <img src="https://raw.githubusercontent.com/sunnamed434/BitMono/main/resources/brand/readme-header-1280.png" alt="BitMono — free & open-source obfuscator for .NET and Mono" width="100%" />
 </p>
 
 ## BitMono

docs/source/_static/favicon.ico

@@ -29,6 +29,9 @@
 # -- Options for HTML output
 
 html_theme = 'sphinx_rtd_theme'
+html_static_path = ['_static']
+html_logo = '_static/logo.png'
+html_favicon = '_static/favicon.ico'
 
 # -- Options for EPUB output
 epub_show_urls = 'footnote'