BE-231: Add InstSimplify pass for MIR instruction simplification and constant folding#8206

indietyp wants to merge 14 commits intobm/be-254-experiment-around-with-codspeedhashintel/hash:bm/be-254-experiment-around-with-codspeedfrom

bm/be-231-hashql-peephole-optimizationhashintel/hash:bm/be-231-hashql-peephole-optimizationCopy head branch name to clipboard