[WIP] Things required to get Python Type-Hints to work with cppyy#708

Vipul-Cariappa wants to merge 4 commits intocompiler-research:maincompiler-research/CppInterOp:mainfrom

Vipul-Cariappa:dev/TypeHintsVipul-Cariappa/CppInterOp:dev/TypeHintsCopy head branch name to clipboard