epic: Cortex Local Swagger should not have deprecated API endpoints

[dan-menlo]

Goal

Swagger should have updated OpenAI API compatible endpoints

Task list

• remove outdated API endpoints eg /inferences,/fine_tuning
• Clean up duplicate endpoints.
  • eg chat completion has inferences/server/chat_completion VS v1/chat/completions (should be this as it is OpenAI compatible)
• Add supported /v1 endpoints #1456
• We should be using the Scalar Swagger template: https://cortex.so/api-reference

Resources

[vansangpfiev]

We are having deprecated and duplicate API endpoints. We will clean it soon.
We should only have below API endpoints (still updating..)

/v1/chat/completions
/v1/embeddings
/v1/engines/install/{1}
/v1/engines/{1}
/v1/engines
/v1/engines/{1}
/v1/models/pull
/v1/models
/v1/models/{1}
/v1/models/import
/v1/models/alias
/v1/models/start
/v1/models/stop

[namchuai]

@gabrielle-ong , currently, the most up to date version of openapi is https://github.com/janhq/cortex.cpp/blob/dev/docs/static/openapi/jan.json

It's also being used in https://cortex.so/api-reference