Add Vulkan op Add. (#44017)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/44017
Test Plan: Imported from OSS
Reviewed By: IvanKobzarev
Differential Revision: D23820826
Pulled By: AshkanAliabadi
fbshipit-source-id: 47db435894696f4eb4277370d4d317d2df9e3b98
