[quant] Add fp32/fp16 zero_point support for CPU fakeQuant (#65055)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/65055
Test Plan: Imported from OSS
Reviewed By: jingsh, supriyar
Differential Revision: D30975238
Pulled By: b-koopman
fbshipit-source-id: 2000660ffe71cb85d00fdabaf8fc3ba7323f9a1e
