[clang] [clang][python][test] Move python binding tests to lit framework (PR #142948)

[Jannick Kremer via cfe-commits]

https://github.com/DeinAlptraum commented:

Thank you for the PR, imo this is a much better approach than the previous one.

As I mentioned before, I'm not familiar with the testing infrastructure, but insofar as it works, this looks good to me.

Do note that the libclang CI should also be adapted: `.github/workflows/libclang-python-tests.yml`
The target it uses doesn't exist anymore, and the paths that trigger the workflow should also be changed to remove the old path and include `clang/tests/bindings/python`. You can now also remove the trigger on `clang/CMakeLists.txt`, which should make this run far less often on unrelated PRs.

https://github.com/llvm/llvm-project/pull/142948