[clang] [libclang] Add API to query more information about base classes. (PR #120300)

[Jannick Kremer via cfe-commits]

https://github.com/DeinAlptraum commented:

I'm only familiar with the Python-side of the bindings, so only reviewed those. Minor comments, otherwise LGTM!

https://github.com/llvm/llvm-project/pull/120300