✨ Field() supports json_schema_extra for Pydantic v2

[KimigaiiWuyi]

According to what this link mentions,

PydanticV1's Field class supported passing arbitrary keyword arguments to the JSON schema. In SQLModel counterpart, it was supported by passing schema_extra (see this).

PydanticV2 still supports passing extra things to the JSON schema but in a slightly different way. One has to pass a dictionary in the json_schema_extra argument (see this).

Field no longer supports arbitrary keyword arguments to be added to the JSON schema. Instead, any extra data you want to add to the JSON schema should be passed as a dictionary to the json_schema_extra keyword argument.

So I modified the Field's parameters to be compatible and consistent with the Pydantic v2 parameters, and for backward compatibility, I didn't remove the schema_extra field, which is logically compatible with both the schema_extra and json_schema_extra passes, and schema_extra should be deprecated at some point in the future. field at some point in the future, but for now schema_extra should be retained.

This Pull Reqeust is easy and simple, and easy to verify.

[Kaplas85]

Any news about this PR?

[ndeybach]

Any possibility of a merge @tiangolo ? I would also be interested in this support being added / long term.

[paulomtts]

Please merge this.