Add interactive logo with cursor-tracking eyes and googly easter egg

- Create InteractiveLogo.vue component for VitePress docs homepage
- Eyes track cursor position with smooth interpolation
- Shake cursor rapidly to trigger googly eyes physics effect
- Support both light mode (opaque lenses) and dark mode (semi-transparent
  red lenses with visible animated eyes behind them)
- Match original SVG design exactly with proper colors for each theme

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: TonsOfFun