RoIPool: SymInt support + meta-implem #1681

Job	Run time
unittests-extended / linux-job	17m 20s
onnx / linux-job	5m 8s
unittests-linux (3.10, linux.12xlarge, cpu) / linux-job	24m 34s
unittests-linux (3.11, linux.12xlarge, cpu) / linux-job	23m 4s
unittests-linux (3.8, linux.12xlarge, cpu) / linux-job	35s
unittests-linux (3.8, linux.g5.4xlarge.nvidia.gpu, cuda, 11.8) / linux-job	1m 8s
unittests-linux (3.9, linux.12xlarge, cpu) / linux-job	39s
unittests-macos (3.10, macos-12) / macos-job	2m 26s
unittests-macos (3.11, macos-12) / macos-job	2m 41s
unittests-macos (3.8, macos-12) / macos-job	1m 45s
unittests-macos (3.8, macos-m1-12) / macos-job	29m 38s
unittests-macos (3.9, macos-12) / macos-job	2m 22s
unittests-windows (3.11, windows.4xlarge, cpu) / windows-job	3m 16s
unittests-windows (3.10, windows.4xlarge, cpu) / windows-job	2m 54s
unittests-windows (3.8, windows.4xlarge, cpu) / windows-job	2m 57s
unittests-windows (3.8, windows.g5.4xlarge.nvidia.gpu, cuda, 11.8) / windows-job	21m 58s
unittests-windows (3.9, windows.4xlarge, cpu) / windows-job	2m 58s
	2h 25m 23s

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