[feature] functions is deprecated, use tools instead

[chris-aeviator]

Is the feature request related to a problem?
OpenAI's modern client has deprecated the functions syntax. When using the recent 'tools' syntax, gorilla will only reply with generic text, e.g. "as a LM I'm unable to zoom the map" instead of the function call "zoom_map()"

Describe the solution you'd like
Make gorilla endpoints compatible with 'tool' schema

Additional context
For me this is relevant too for self-hosting gorilla as tooling expects to follow OAIs spec.

[ShishirPatil]

Thanks for trying it out @chris-aeviator ! Yeah, this is something we do want to migrate to, for now we are compatible with openai==0.28 which uses functions. Once we move to openai>=1.0 we will start supporting tools.