Add the ability to stream and use tool calls for OllamaAI

[14corman]

I saw OllamaAI had some work done to it recently, and since I am also using OllamaAI I figured I add on to that. I added ability for streaming to call functions for OllamaAI.

Let me know if there is anything missing, or any tests needed.

[brainlid]

Hi @14corman! Thanks for the addition!

Can you add or update any relevant documentation and add some test coverage? Without tests, any refactors or updates I make may break things and I wouldn't know because I don't actively develop against Ollama.