[clang] Retrieve BinaryOperator::getOpcode and BinaryOperator::getOpcodeStr via libclang and its python interface (PR #98489)

[Thomas Wucher via cfe-commits]

thomaswucher wrote:

Thanks for your note @Endilll! I've rebased my changes to the latest main branch. Could you give this a review? Thanks in advance!

https://github.com/llvm/llvm-project/pull/98489