ns for fx: add API usage logging (#60103)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/60103
Adds internal logging for NS for FX API usage.
Test Plan: CI
Reviewed By: jerryzh168
Differential Revision: D29166710
fbshipit-source-id: 2a1bf2f6038b0c6c5945b57b2db2de25c585a04a
