Add LLama.cpp

[shreesha345]

I am New to this but I want one feature to be added that is Lama.cpp or any open source LLM so that we can be free from openai api 🗝
just a feature and too I want to help you all in setting up a perfect tags so that it is neat and please give me a roll to handle that.
I loved this project.

[justinledwards]

You can achieve that by setting the baseurl on the openai package