[sparse] Add the AO namespace to torch (#58703)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/58703
Test Plan: Imported from OSS
Reviewed By: jbschlosser
Differential Revision: D28970962
Pulled By: z-a-f
fbshipit-source-id: 0d0f62111a0883af4143a933292dfaaf8fae220d
