[jvm-packages] Supports external memory #14078

Job	Run time
Build CPU	13m 36s
Build CPU ARM64 + manylinux_2_28_aarch64 wheel	3m 14s
Build CUDA + manylinux_2_28_x86_64 wheel	10m 29s
Build CUDA with RMM (dev)	10m 6s
Build CUDA with RMM	10m 23s
Build GPU-enabled R package	14m 45s
Build manylinux2014_aarch64 wheel	3m 7s
Build manylinux2014_x86_64 wheel	3m 26s
Run Google Tests with GPUs (Suite gpu, Runner linux-amd64-gpu)	4m 34s
Run Python tests (single-gpu)	1s
Run Google Tests with GPUs (Suite gpu-rmm, Runner linux-amd64-gpu)	4m 37s
Run Python tests (multiple-gpu)	14m 57s
Run Google Tests with GPUs (Suite mgpu, Runner linux-amd64-mgpu)	2m 54s
Run Python tests (cpu-amd64)	10m 50s
Run Python tests (cpu-arm64)	1m 21s
	1h 48m 20s

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