Add support for `PANDERA_VALIDATION_ENABLED` for pandas about pandera HOT 5 OPEN

The PR description and approach is good! Basically we need to:

1. Add the early return in the pandas API schema/schema components
2. Add tests similar to the ones here in the pyspark tests.
3. Update the docs, probably a new page dedicated to configuration (if you can write the content I can help with the structure and formatting)

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I haven't made any PR to pandera before, if this direction is correct I could try to make a PR, but I would like to get some feedback first. Please advise what tests are needed and potentially where should I add them.

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Sounds good! I will try to finish it this week, if not I will be back in mid Oct.

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I just have a quick look, does pandera have something like GitPod or Github Codespace for CDE development? If not I can also create a separate PR to add support for GitPod and maybe add this into the contribution guide as an alternative to build locally.

They have a open source program https://www.gitpod.io/discover/opensource

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I think github codespace should just work out of the box, not sure how it installs the virtual environment tho

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