Change all the callers in backend specific instruction-selector
to call the functions in simd-shuffle.h

Also copy over the documentation that was in instruction-selector.h
to simd-shuffle.h.

Bug: v8:10696
Change-Id: Ic9339d6481316f18c19f35c45460e700b45ec38e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2327182
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69150}