feat: Add project landing page with a live demonstration

[ViratiAkiraNandhanReddy]

✨ Summary

This PR adds a GitHub Pages–compatible static landing page for the project.
The page serves as a public-facing demo and documentation entry point without requiring any backend or build step.

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📄 What’s Included

• Static HTML landing page
• Tailwind CSS via CDN (no build pipeline)
• Client-side JavaScript for interactive demo
• Fully compatible with GitHub Pages (HTTPS-safe)
• Clean structure suitable for /docs or root deployment

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✅ Why This Change

• Provide a visual and interactive showcase for the project
• Enable easy hosting via GitHub Pages
• Improve discoverability and usability for users
• Keep the project lightweight and dependency-free

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🔍 Technical Notes

• Uses only static web technologies (HTML, CSS, JS)
• No server-side code or runtime dependencies
• Works correctly under GitHub Pages path-based routing
• No changes to core library logic

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🧪 Testing

• Verified page loads correctly on GitHub Pages
• Verified styles and scripts load via CDN
• Verified functionality works in modern browsers