[pydoclint] Add docstring-missing-returns amd docstring-extraneous-returns (DOC201, DOC202)

[augustelalande]

Summary

Add docstring-missing-returns amd docstring-extraneous-returns (DOC201, DOC202). These rules check that the returns defined (or not) in the docstring of a function match its implementation.

Part of #12434.

Test Plan

Test cases added.

[codspeed-hq]

CodSpeed Performance Report

Merging #12485 will not alter performance

_{Comparing augustelalande:doc2xx (456db23) with augustelalande:doc2xx (16e30f2)}

Summary

✅ 33 untouched benchmarks

[MichaReiser]

Thanks. This overall looks good to me. I think there's a pre-existing issue around nested functions. I'm okay with merging the PR as is and doing a follow up pr to fix it or fix it in this pr.

[augustelalande]

All done