[Tensorpipe Agent] Adding Tensorpipe Codeowners (#37854)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/37854
Adding Tensorpipe contributors to the Codeowners file for Tensorpipe-related functionality in PyTorch.
ghstack-source-id: 103507371
Test Plan: CI
Differential Revision: D21408676
fbshipit-source-id: ea7cc1fd7ec069c83e67812e704d31492ef2a3cf
