feat(favicon,repair-pdf): Add favicon support and implement PDF repair tool

- Add favicon.ico to public directory for browser tab display
- Update favicon references across all HTML pages with proper link tags for SVG, PNG, and ICO formats
- Add Apple touch icon support for iOS devices
- Create new repair-pdf.ts logic module for PDF repair functionality
- Create new repair-pdf-page.ts utility module for page-level repair operations
- Add repair-pdf.html page with UI for PDF repair tool
- Register repair PDF tool in tools configuration and PDF tools registry
- Update UI rendering utilities to support new repair tool
- Improve favicon handling with multiple format fallbacks for cross-browser compatibility
- Standardize favicon paths to use absolute URLs for consistency
- Clean up whitespace and formatting in licensing.html for code consistency

vite.config.ts

@@ -61,6 +61,7 @@ export default defineConfig(({ mode }) => ({
         'pdf-multi-tool': resolve(__dirname, 'src/pages/pdf-multi-tool.html'),
         'add-stamps': resolve(__dirname, 'src/pages/add-stamps.html'),
         'form-creator': resolve(__dirname, 'src/pages/form-creator.html'),
+        'repair-pdf': resolve(__dirname, 'src/pages/repair-pdf.html'),
       },
     },
   },