Add ms-python.pylint

[curbengh]

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• This extension has an OSI-approved OSS license (we don't accept proprietary extensions in this repository)

Description

This PR adds the missing "ms-python.pylint" extension for python linting, the default linter used by the "ms-python.python" extension. This extension has the same author as "ms-python.python". Installed the build on VSCodium 1.74.3 and it functions just fine.

[filiptronicek]

Hey there @curbengh 👋, thanks a lot for raising the PR.

The changes look good, thanks for testing them on VSCodium as well!

I'm just unsure about the fact that the package Microsoft provides is about 7 times larger than ours 🤔, I wonder why.

[filiptronicek]

Oh, it looks like the size difference was because of me not using Python 3.7 for validation. Thanks again!