Replace inline SVG markup with external icon files using CSS mask-based rendering. This approach reduces HTML duplication, enables dynamic color tinting via currentColor, and improves maintainability by centralizing icon definitions. Updates favicon rendering in chrome.js, icon styling in CSS files, and converts icon elements across 404, insecure, and settings pages. Also updates settings page favicon and GitHub link URL.
Add initial Nebula Browser project skeleton: CMakeLists to configure and link CEF (including post-build steps to copy runtime and UI files), a Windows CEF-based entry (app/main.cpp) that initializes CEF and loads the bundled UI, and a full ui/ and assets/ tree (HTML, CSS, JS, fonts, icons, and branding images). Update .gitignore to ignore build/out, thirdparty/cef, IDE and common OS artifacts.
Andrew Zambazos