Extract client

[inverse]

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[paulotruta]

Left a couple comments, mostly regarding the client having a different name. If you could change it to something that pertains the meaning of what it does more specifically, would be awesome 🙌 I left code change suggestions, but feel free to pick your name, or something even simpler like just "LLMClient".

Another point, is about how we pass the api client into the LLMQuestionProxy class instantiation now. I wonder if it would make sense to have a client for webhook and another one for OpenAI OpenAPI Spec compatible calls, and decide which client to pass when instantiating LLMQuestionProxy. I think at this point its ok to stay as is though, so no changes required here ;)

[inverse]

Updated with suggestions + merged main in and updated layout.