Add UCXX tests #354

Job	Run time
checks / check-style	1m 47s
checks / other-checks	43s
wheel-build	52s
conda-python-build / compute-matrix	3s
conda-python-build / build (11.8.0, ubuntu22.04, amd64, 3.9)	4m 24s
conda-python-build / build (11.8.0, ubuntu22.04, arm64, 3.9)	3m 32s
conda-python-build / build (11.8.0, ubuntu22.04, amd64, 3.10)	4m 21s
conda-python-build / build (11.8.0, ubuntu22.04, arm64, 3.10)	3m 34s
conda-python-build / build (12.0.1, ubuntu22.04, amd64, 3.9)	4m 24s
conda-python-build / build (12.0.1, ubuntu22.04, arm64, 3.9)	3m 25s
conda-python-build / build (12.0.1, ubuntu22.04, amd64, 3.10)	4m 21s
conda-python-build / build (12.0.1, ubuntu22.04, arm64, 3.10)	3m 22s
docs-build / build	3m 13s
conda-python-tests / compute-matrix	2s
conda-python-tests / tests (11.4.3, centos7, amd64, 3.9, v100, earliest)	10m 53s
conda-python-tests / tests (11.8.0, ubuntu22.04, amd64, 3.10, v100, latest)	7m 54s
conda-python-tests / tests (12.0.1, ubuntu22.04, amd64, 3.10, v100, latest)	2m 33s
conda-python-tests / tests (12.0.1, ubuntu22.04, arm64, 3.10, a100, latest)	1m 14s
pr-builder	1s
	1h 0m 38s

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