.github: Migrate iOS workflows to GHA (#67645)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/67645
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Test Plan: Imported from OSS
Reviewed By: malfet
Differential Revision: D32104367
Pulled By: seemethere
fbshipit-source-id: 08ff043ed5d0b434322f1f3f20dce2a4f5fa88c1
