Add Maxpool to shape analysis / Opinfo (#63530)

Add Maxpool to shape analysis / Opinfo (#63530)

Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63530

how to review: pretty much just check that the inputs generated are a good representation of the op semantics, that should be sufficient for correctness, and then you can also double check the op size semantics by going to https://codebrowser.bddppq.com/pytorch/pytorch/ typing in native::{op_name} and looking at the op implementation as a bonus if you want

Test Plan: Imported from OSS

Reviewed By: driazati

Differential Revision: D30738147

Pulled By: eellison

fbshipit-source-id: cf52339e572ee04e0d6167fd95d8a82d58ea7706