Support of definitions in json schema representation when using OpenAI tool calling

[pwnywiz]

Checked

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Feature request

It looks like OpenAI now supports definitions and references inside the json schema of functions / tools.

It would be very convenient if, for Pydantic V2 models, the dereferencing of these fields was optional.
Particularly inside the convert_pydantic_to_openai_function.

I would be happy to contribute in the implementation.

Motivation

That would dramatically reduce the length of tool definitions, which would offer lower input token costs and speed up inference times when calling OpenAI models.

Proposal (If applicable)

No response