add libcudacxx cpm #1256

Job	Run time
checks / check-style	2m 9s
checks / other-checks	41s
conda-cpp-build / compute-matrix	2s
wheel-build / compute-matrix	2s
wheel-build / wheel epoch timestamper	2s
wheel-build / cibuildwheel amd64 3.9 11.8.0	7m 23s
wheel-build / cibuildwheel amd64 3.10 11.8.0	7m 17s
wheel-build / cibuildwheel arm64 3.9 11.8.0	5m 56s
wheel-build / cibuildwheel arm64 3.10 11.8.0	5m 47s
wheel-build / cibuildwheel amd64 3.9 12.0.1	7m 34s
wheel-build / cibuildwheel amd64 3.10 12.0.1	7m 36s
wheel-build / cibuildwheel arm64 3.9 12.0.1	6m 1s
wheel-build / cibuildwheel arm64 3.10 12.0.1	5m 56s
conda-cpp-build / build (11.8.0, ubuntu22.04, amd64, 3.10)	9m 13s
conda-cpp-build / build (11.8.0, ubuntu22.04, arm64, 3.10)	8m 39s
conda-cpp-build / build (12.0.1, ubuntu22.04, amd64, 3.10)	9m 3s
wheel-tests / wheel-test-compute-matrix	3s
wheel-tests / wheel unit test amd64 3.9 11.8.0	10m 5s
wheel-tests / wheel unit test amd64 3.10 12.0.1	9m 54s
wheel-tests / wheel smoke test arm64 3.9 12.0.1	7m 6s
conda-python-build	0s
conda-cpp-tests	0s
conda-notebook-tests	0s
docs-build	0s
conda-python-tests	0s
pr-builder	0s
	1h 50m 29s

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