Implement new Strict Tool Call support

[Bodekaer]

@StephenHodgson have you seen the new Strict option for function calls, and any plans to implement this?
Will be helpful, as I randomly experience hallucinated function calls :)

More info:
https://platform.openai.com/docs/guides/function-calling/function-calling-with-structured-outputs

[StephenHodgson]

Yes I already have a task to complete this

• Structured outputs OpenAI-DotNet#343