Add schema(...).field(...).had(json_schema_extra=...) argument

[zmievsa]

This argument will give our users a chance to alter extras within the fields as well. Note that we will only support Pydantic2 naming but this argument should work in both pydantic versions.

[cksharma2468]

Hey @zmievsa, I'd be glad to work on the issue if you'd assign me.
Since I'm a beginner in opensource and want to contribute in opensource projects it will be great if you'd help/guide me through.

[zmievsa]

@cksharma2468 Done. Please, read through the docs and the contributing guide. After you complete them, you will have everything you need to complete this task.

[cksharma2468]

Thanks , I'll work on it 😊