[Feature Request] Add a custom base URL and API key.

[hoshinojyunn]

Is your feature request related to a problem? Please describe.
Currently, the extension only supports the OpenAI API, which is inconvenient for users who have already purchased other LLM coding plans.

Describe the solution you'd like
Could you add the ability to customize the LLM base URL and API key (supporting adaptations like Minimax and GLM)?

[kah-seng]

Thank you for the request. We are currently working on and testing this feature, we hope to be able to release it soon.