Added OpInfos for sub & mul (#56227)
Summary:
`OpInfo`s for `sub` & `mul` operators. Both of them will reuse the sample inputs function added for `add` via another PR.
A https://github.com/pytorch/pytorch/issues/54261 task.
cc mruberry
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56227
Reviewed By: H-Huang
Differential Revision: D27993889
Pulled By: mruberry
fbshipit-source-id: 7b2da02b0edba3cc37b5b1b88ca32f7dd369ca60
