feat: Swagger should support all API Endpoints

[dan-menlo]

Goal

• Document existing API Endpoints (e.g. cortex start)
• Investigate whether we can autogenerate Drogon Swagger

Tasklist

• Documenting existing API endpoints that are missing in Swagger
• Dan to intro to Marty (Drogon maintainer)

[nguyenhoangthuan99]

• I added all openAI API field in the Chat Completion documentation in this pr Feat/api docs #1589
• All API endpoint for /v1 is in the API, the models/import is supported in this pr chore: add model name as a parameter support during import via API #1600
• We need to add API doc for /health, /destroy to stop server.
• For all parts that has not been implemented yet in chat completion documentation, we should link PR for it.