[Feature Request]: Provide openai style api

[HGGshiwo]

Is there an existing issue for the same feature request?

• [X] I have checked the existing issues.

Is your feature request related to a problem?

No response

Describe the feature you'd like

I want to use chatgpt-next as the frontend, but ragflow api is different than any other popular model provider api. If want to use history, must provide a conversation id, rather than pass the historys as a praram, and it is hard to convert it to any openai style api.

I hope ragflow can provide an openai style api, so It can integrating different frontends for better suitability.

Describe implementation you've considered

No response

Documentation, adoption, use case

No response

Additional information

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