Added OpInfos of add & mm (#55915)
Summary:
Added `OpInfo`s of `add` & `mm`.
cc anjali411
Pull Request resolved: https://github.com/pytorch/pytorch/pull/55915
Reviewed By: agolynski
Differential Revision: D27800077
Pulled By: heitorschueroff
fbshipit-source-id: 84be4b0930f6ef472622e6721a516cc182ac76d1
