Creating a helper function to generate an unique name for an attr in a module (#64970)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64970
Add a helper function to create an unique name for an attr.
This can be used when we want to add a weight to a module.
Test Plan: run CI.
Reviewed By: jfix71
Differential Revision: D30921497
fbshipit-source-id: 598569d107df8b516ff12920a4bef3a42577e987
