Refactoring done to more easily and cleanly add SIMD optimizations and
to remove `GatedRecurrentLayer` from the RNN VAD api.
Bug: webrtc:10480
Change-Id: Ie1dffdd9b19c57c03a0b634f6818c0780456a66c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/195445
Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
Reviewed-by: Jakob Ivarsson <jakobi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32770}