Make GPUInterpreter extensible #1400

Job	Run time
Julia 1.11 x86_64-linux-gnuassert	4m 0s
Julia 1.11 x86_64-linux-gnuassert --opaque-pointers	3m 42s
Julia 1.10 - ubuntu-latest - x64	1m 36s
Julia 1.10 - macOS-latest - x64	2m 38s
Julia 1.10 - windows-latest - x64	2m 16s
Julia pre - ubuntu-latest - x64	2m 55s
Julia pre - macOS-latest - x64	3m 31s
Julia pre - windows-latest - x64	3m 38s
Julia nightly - ubuntu-latest - x64	1m 3s
Julia nightly - macOS-latest - x64	1m 47s
Julia nightly - windows-latest - x64	1m 55s
Julia 1.10 --opaque-pointers - ubuntu-latest - x64	1m 38s
Julia 1.10 --opaque-pointers - macOS-latest - x64	1m 47s
Julia 1.10 --opaque-pointers - windows-latest - x64	2m 13s
Julia pre --opaque-pointers - ubuntu-latest - x64	2m 48s
Julia pre --opaque-pointers - macOS-latest - x64	4m 12s
Julia pre --opaque-pointers - windows-latest - x64	3m 22s
	45m 1s

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