[Feature Request]: OpenAI-Compatible API attachment files

[wikylyu]

Is there an existing issue for the same feature request?

• I have checked the existing issues.

Is your feature request related to a problem?

We want to manage chat sessions by ourselves, and OpenAI-Compatible API is quite useful in this case.
But it doesn't support attachment files.

Describe the feature you'd like

add a field called files in messages

{
    "messages": [{"role":"user","content":"hello","files":[{"blob":"...","display_name":"a.txt"}]}]
}

Describe implementation you've considered

No response

Documentation, adoption, use case

Additional information

No response