Adds functionality for Slice Node in sytorch#185

Open

drunkenlegend wants to merge 3 commits into

Commits on Jul 10, 2023

initial implementation for slice correctness verified
drunkenlegend
committed

Commits on Jul 13, 2023

made the slice node general, now supports vectors in axes, and optional values
drunkenlegend
committed
extended functionality for -ve axes and steps
drunkenlegend
committed