Add new SPLIT op

Also add tests for it.

Bug: 113563597
Test: NeuralNetworksTest_static with new tests
Change-Id: I32cb7ccd3fae023e97d207bdfbad29c497dc4044
Merged-In: I32cb7ccd3fae023e97d207bdfbad29c497dc4044
(cherry picked from commit a85cac86b4b5d53f0173197ff0882eb70ce0b2e1)
85 files changed