Add support for both NVIDIA and AMD GPUs #251

Job	Run time
build-and-test (ubuntu-latest, cpu)	5m 21s
build-and-test (ubuntu-latest, cpu)	5m 21s
build-and-test (ubuntu-latest, acc)	7m 8s
build-and-test (ubuntu-latest, acc)	7m 8s
build-and-test (ubuntu-latest, ompgpu)	6m 52s
build-and-test (ubuntu-latest, ompgpu)	7m 59s
build-and-test (macos-13, cpu)	5m 6s
build-and-test (macos-13, cpu)	5m 6s
build-and-test (macos-14, cpu)	2m 48s
build-and-test (macos-14, cpu)	2m 48s
build-and-test (linux-gpu-cuda, acc)	1s
build-and-test (linux-gpu-cuda, acc)	1s
build-and-test (linux-gpu-cuda, ompgpu)	3m 1s
build-and-test (linux-gpu-cuda, ompgpu)	3m 1s
	1h 1m 41s

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