[clang] [llvm] [clang][python][test] Move python binding tests to lit framework (PR #145855)

[Jannick Kremer via cfe-commits]

https://github.com/DeinAlptraum approved this pull request.

Great! 
LGTM, just wait for the libclang CI to pass

https://github.com/llvm/llvm-project/pull/145855