[llvm] Add GitHub workflow for check Python file formatting (PR #65482)

[via llvm-commits]

EugeneZelenko wrote:

> > May be this should be part of the build as `Clang-format` in `polly`? Same could be done for Python linters (`Flake8`, `PyLint`, `MyPy`).
> 
> Not sure what you mean. I am not familiar with what polly does? We seldom "build" for python scripts.

Nothing prevents to run some tools (formatters, linters) over Python source files during build. Sure, relevant rules should be added to CMake files.

https://github.com/llvm/llvm-project/pull/65482