[clang] [llvm] [libclang/python] Enable packaging clang python bindings (PR #125806)

[Ryan Mast via llvm-commits]

nightlark wrote:

I updated the minimum Python version requirement to 3.8; it assumes the user has a copy of the .so/.dll installed on their system. The bindings provides a function to help users locate and point it to the library they already have on their system.

https://github.com/llvm/llvm-project/pull/125806