Add OpenAI Response type JSON schema

[ledongthuc]

Add OpenAI Response type JSON schema

Description

This PR adds support for defining JSON Schema when working with OpenAI through Lingoose. This enhancement allows users to specify the desired response format using JSON Schema, aligning with OpenAI’s structured outputs feature.

The update introduces:

• A new field to accept a JSON Schema definition.
• Logic to pass this schema to the OpenAI API when the response format type is set and a schema is provided.

#237

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• TestWithResponseFormatJSONSchema

Checklist:

• I have read the Contributing documentation.
• I have read the Code of conduct documentation.
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have checked my code and corrected any misspellings

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[ledongthuc]

@henomis hi, hope it's ok, and could you look at it.
I can support if you need any changes

[henomis]

Awesome work! 🚀 I'll test ASAP!