[Feature]: Let's docs APIs

[Aisuko]

Contact Details(optional)

No response

What feature are you requesting?

We should add more docs, example for the APIs. Here are the examples:

• https://fastapi.tiangolo.com/tutorial/metadata/
• https://stackoverflow.com/a/71400955/6712353
• https://fastapi.tiangolo.com/how-to/configure-swagger-ui/
• https://fastapi.tiangolo.com/tutorial/schema-extra-example/?h=
• https://fastapi.tiangolo.com/tutorial/path-operation-configuration/#tags

[Lijinyu3]

@Aisuko