Add use cases

[Undertone0809]

🚀 Feature Request

We hope use some tiny user case to help development startup. An idea is we can build a AI websearch website for user.

We can use vercel and vue/react to build a chat app fastly. Using flask as backend.

There are some good cases:

• https://github.com/vercel/examples/tree/main/python/nextjs-flask
• https://vercel.com/templates/next.js/nextjs-ai-chatbot change next.js + fastapi + pne
• https://vercel.com/templates/next.js/novel nextjs + fastapi+ pne