Move c10d to libtorch(_cuda) (#59563)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/59563
ghstack-source-id: 131331264
Test Plan: CI
Reviewed By: malfet
Differential Revision: D28932239
fbshipit-source-id: 5df6cdfa5253b15cbbc97039fe672d6d97321e34
