Introduce TailwindCSS utilities, animations, and theme configurations to enhance UI styling. Update dependencies to include Radix, clsx, lucide-react, and other utilities for improved design flexibility and component styling. Refactor global CSS, PostCSS config, and utils for streamlined development.
This commit includes configurations and boilerplate code for both frontend and backend. The frontend uses Next.js with Tailwind CSS, while the backend is built with FastAPI. Various essential files like `tsconfig.json`, `requirements.txt`, and `.gitignore` have been added to kickstart the development process.
