[Profiler][Trivial] Add Module cls and self bindings and type_caster macro (#86755)
Just a bit of clean up. We will need `self` and `cls` for memory profiling, and the type_caster specializations were getting quite verbose.
Differential Revision: [D39920728](https://our.internmc.facebook.com/intern/diff/D39920728/)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/86755
Approved by: https://github.com/slgong-fb, https://github.com/aaronenyeshi
