[WIP] Adding bunch of unary foreach APIs (#47383)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/47383
Test Plan: Imported from OSS
Reviewed By: anjali411
Differential Revision: D24737050
Pulled By: izdeby
fbshipit-source-id: deb59b41ad1c79b66cafbd9a9d3d6b069794e743
