a972a394af
This is a rework of patch [D10833](https://reviews.llvm.org/D10833) previously posted on LLVM Phabricator by arthurp in 2015. It allows to retrieve the type of binary operator via libclangs python bindings. I did clean up the changes, removed unrelated changes and rebased the changeset to the latest main branch. As this is my first contribution to the LLVM project, let me know if any required tests or documentation are missing.