Modified the CSS for the PDF viewer to set the --csstools-color-scheme--light variable to 'initial' in multiple places, ensuring consistent styling across dark mode and improving compatibility with color scheme preferences.
Add initial set of PDF.js viewer files including:
- WASM binaries for PDF rendering
- Standard fonts and CMAP files for text rendering
- UI icons and SVG assets for toolbar buttons
- TypeScript declaration files
- Loading animation GIF
- Annotation icons and UI elements
This provides the base functionality for the PDF viewer including:
- Document rendering
- Navigation controls
- Zoom functionality
- Page display options
- Annotation tools
- Document properties
