[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.