clean up GIL usuage (#32748)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/32748
This is to follow up PR #30630, we need to have GIL when calling jit::toPyObject(), for some binded functions need to be taged with GIL release if underneath C++ codes requires GIL. so
1. pyRef::to_here() and pyRef::local_value() added GIL
2. pyRef::pickle and pyRef::unpickle() added GIL release tag
3. in request_callback_impl, also added GIL as needed
4. for typeParser, use cached jitCompilationUnit_, also clean it up in cleanUp() function
ghstack-source-id: 97373011
Test Plan: unit test
Differential Revision: D19612337
fbshipit-source-id: 4d09f9b52ba626545ae7d31fea6b671301ed3890
