add c++ rmat tests #4456

Job	Run time
devcontainer / build (amd64, 12.2, conda)	3m 43s
checks / check-style	1m 18s
checks / other-checks	39s
devcontainer / build (amd64, 12.2, pip)	3m 42s
wheel-build-cugraph-equivariant / compute-matrix	4s
wheel-build-cugraph-equivariant / 11.8.0, 3.9, amd64, centos7	3m 23s
wheel-build-cugraph-equivariant / 12.2.2, 3.9, amd64, centos7	3m 23s
wheel-build-cugraph-equivariant / 11.8.0, 3.10, amd64, centos7	3m 29s
wheel-build-cugraph-equivariant / 12.2.2, 3.10, amd64, centos7	3m 30s
wheel-build-cugraph-equivariant / 11.8.0, 3.11, amd64, centos7	3m 25s
wheel-build-cugraph-equivariant / 12.2.2, 3.11, amd64, centos7	3m 26s
wheel-build-cugraph-equivariant / 11.8.0, 3.9, arm64, rockylinux8	2m 51s
wheel-build-cugraph-equivariant / 12.2.2, 3.9, arm64, rockylinux8	2m 45s
wheel-build-cugraph-equivariant / 11.8.0, 3.10, arm64, rockylinux8	2m 42s
wheel-build-cugraph-equivariant / 12.2.2, 3.10, arm64, rockylinux8	2m 49s
wheel-build-cugraph-equivariant / 11.8.0, 3.11, arm64, rockylinux8	2m 41s
wheel-build-cugraph-equivariant / 12.2.2, 3.11, arm64, rockylinux8	2m 47s
wheel-build-pylibcugraph	0s
conda-cpp-build	0s
conda-python-build	0s
conda-cpp-checks	0s
conda-cpp-tests	0s
wheel-tests-pylibcugraph	0s
conda-python-tests	0s
conda-notebook-tests	0s
docs-build	0s
wheel-build-cugraph	0s
wheel-build-nx-cugraph	0s
wheel-tests-cugraph	0s
wheel-tests-nx-cugraph	0s
wheel-build-cugraph-pyg	0s
wheel-build-cugraph-dgl	0s
wheel-tests-cugraph-pyg	0s
wheel-tests-cugraph-dgl	0s
wheel-tests-cugraph-equivariant	1s
pr-builder	1s
	46m 39s

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