[IRSim] Adding wrapper pass for IRSimilarityIdentfier This introduces an analysis pass that wraps IRSimilarityIdentifier, and adds a printer pass to examine in what function similarities are being found. Test for what the printer pass can find are in test/Analysis/IRSimilarityIdentifier. Reviewed by: paquette, jroelofs Differential Revision: https://reviews.llvm.org/D86973 GitOrigin-RevId: f02c4c87b46c8203d7368cadc62607707d6f66b8