Better tests/support for Python/C++ inter-op (#15193)
Summary:
Methods like `module.named_modules()` returns a container of `shared_ptr<nn::Module>`. Currently the `nn::Module` base class does not have Python bindings. This PR fixes this, and adds more unit tests.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/15193
Differential Revision: D13458713
Pulled By: goldsborough
fbshipit-source-id: 4091fe1b96a1be8db14c6a4307fbacc2b41ff6fe
