Add MSFT Owners to the Windows Maintainership (#42280)
Summary:
Fixes #{issue number}
Pull Request resolved: https://github.com/pytorch/pytorch/pull/42280
Reviewed By: albanD
Differential Revision: D22836782
Pulled By: soumith
fbshipit-source-id: a38f91e381abc0acf3ab41e05ff70611926091ac
