Mistral codestral FIM model endpoint

[archiewood]

Feature Description

Firstly, thank you for developing this excellent SDK.

I'm using the mistral FIM endpoint https://docs.mistral.ai/capabilities/code_generation/#fill-in-the-middle-endpoint for code completion in the context of a code editor.

It would be nice to be able to wrap this in the vercel SDK to make it more agnostic.

At the moment there appear to be issues:

• there is no way to change the mistral api endpoint from eg /chat/completions to /fim/completions
• the mistral provider does not implement the completions function similar to OpenAI (just chat)
• the codestral-latest model is not explicitly exposed/documented - (but I think this is fine, and i can just use the model id anyway)

Use Cases

One tool I'd like to offer, in certain circumstances is the ability to complete or correct code inline, from the user's current position

Additional context

I am currently planning to work around this by calling out to a separate endpoint and using the mistral API directly.
I am open to contributing this if it is of interest the the project.