Definition infrastructure for instruction count ubenchmarks (#53293)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/53293
Instruction count benchmarks need some includes for IValues, but this is also just generally useful. (Unlike Python where you can just drop imports anywhere, C++ will get very upset if you `#include` in a function body...)
Test Plan: Imported from OSS
Reviewed By: Chillee
Differential Revision: D26906684
Pulled By: robieta
fbshipit-source-id: cbdfd79d3b8383100ff2e6857b6f309c387cbe2a