Add caching allocator interface #764

Job	Run time
Documentation	1m 3s
OpenCL.jl	1m 32s
Julia 1.10 - ubuntu-latest - x64	47s
Julia 1.10 - macOS-latest - x64	1m 27s
Julia 1.10 - windows-latest - x64	1m 26s
Julia pre - ubuntu-latest - x64	11m 57s
Julia pre - macOS-latest - x64	10m 35s
Julia pre - windows-latest - x64	13m 28s
Julia nightly - ubuntu-latest - x64	10m 51s
Julia nightly - macOS-latest - x64	10m 18s
Julia nightly - windows-latest - x64	11m 33s
	1h 14m 57s

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