Add caching allocator interface #778

Job	Run time
OpenCL.jl	17m 53s
Documentation	1m 37s
Julia 1.10 - ubuntu-latest - x64	9m 55s
Julia 1.10 - macOS-latest - x64	9m 45s
Julia 1.10 - windows-latest - x64	11m 39s
Julia pre - ubuntu-latest - x64	13m 12s
Julia pre - macOS-latest - x64	16m 32s
Julia pre - windows-latest - x64	13m 29s
Julia nightly - ubuntu-latest - x64	12m 19s
Julia nightly - macOS-latest - x64	13m 12s
Julia nightly - windows-latest - x64	13m 24s
	2h 12m 57s

Provide feedback