Add new op ROI_POOLING.

Add reference CPU implementation for ROI_POOLING with NHWC/NCHW data layout
and FP32/QUANT8 input data type.

Create tests for both operations. Generate cts/vts tests. Testcases are
verified by execution on Caffe2 lib.

Bug: 113560033
Test: NeuralNetworksTest_static
Change-Id: Icd6925b64975ddff0a538705b342ac76f6f31249
Merged-In: Icd6925b64975ddff0a538705b342ac76f6f31249
(cherry picked from commit 5ed64a411b909d517eb879e0341e8fc9207190bc)
11 files changed