Inheritance of Config in SchemaModel

[abyz0123]

Describe the bug

!Not sure if a bug or design choice!

When inheriting a SchemaModel, I would expect that the Config class gets inherited with it, so that Schema-wide parameters such as unique are present in downstream model. This would be consistent with pydantic's handling thereof.

Also asked on SO here.

• [x] I have checked that this issue has not already been reported.
• [x] I have confirmed this bug exists on the latest version of pandera.
• [ ] (optional) I have confirmed this bug exists on the master branch of pandera.

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Code Sample, a copy-pastable example

from pandera import SchemaModel
from pandera.typing import Series

class Model1(SchemaModel):
    col1: Series[int]
    class Config:
        unique=['col1']

class Model2(Model1):
    col2: Series[str]

assert Model1.Config.unique == Model2.Config.unique

Expected behavior

Expected behaviour would be similar to pydantic.

from pydantic import BaseModel

class Model1(BaseModel):
    col1: str

    class Config:
        unique = ['col1']

class Model2(Model1):
    col2: str

assert Model1.Config.unique == Model2.Config.unique

Desktop (please complete the following information):

• OS: ubuntu, macOs

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Additional context

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[cosmicBboy]

hi @abyz0123 check out the discussion here: https://github.com/unionai-oss/pandera/issues/983#issuecomment-1289623381

[cosmicBboy]

(in short, it's by design)

[abyz0123]

Thanks for the quick follow-up, will close!