Inherited documentation/code from Ollama

Cria has many features inherited from ollama.

ai = cria.Cria()

prompt = "Return a JSON array of car brands."
response = ai.chat(prompt=prompt, stream=False, format="json")

Features like the above, where passing in format="json" ensures JSON output, are available from ollama, but not documented for Cria. Documentation can be found on ollama, but it would be useful to have that documentation natively.

This issue is meant for beginners, and if you are interested in either porting some more esoteric features from ollama over to Cria, or simply writing some documentation, you can help with this issue.

Important: If you want to work on this issue, please @ me and I will assign you. Once assigned, I can give you some more context depending on what you want to help with, and fill you in on some of Cria's more confusing source code.

Start with the Ollama Python documentation linked in the issue and the cria.Cria and ai.chat entry points shown in its example. Identify inherited features that Cria supports but does not document, then add native Cria documentation covering the selected feature or features and confirm the examples match the available API.