Add Landing Page with Proposed UI Using Shadcn Components

The current website lacks a landing page, which is essential for giving users a better understanding of the product. I propose creating a landing page based on the provided UI design, using Shadcn components, React, and TypeScript. This addition will improve the user experience and enhance the presentation of the product.

Attached below is the proposed UI design for reference:

https://github.com/user-attachments/assets/3005b0a8-9893-4176-8ee0-31a6736aff8e

Let me know if there's anything else you'd like to include or modify!