WIP: Vulkan sampling support #135

Job	Run time
build-macos (linux, x64, release)	25s
build-linux (linux, x86)	27s
build-windows (windows, x86, debug, 14.3)	37s
build-linux (linux, x64)	28s
build-android (android, armv7, release, 21)	24s
build-windows (windows, x86, debug, 14.2)	1m 19s
build-android (android, arm64, release, 21)	43s
build-windows (windows, x86, debug, 14.1)	1m 2s
build-windows (windows, x86, release, 14.3)	2m 10s
build-windows (windows, x86, release, 14.2)	46s
build-windows (windows, x86, release, 14.1)	32s
build-windows (windows, x64, debug, 14.3)	1m 10s
build-windows (windows, x64, debug, 14.2)	1m 17s
build-windows (windows, x64, debug, 14.1)	1m 14s
build-windows (windows, x64, release, 14.3)	1m 2s
build-windows (windows, x64, release, 14.2)	1m 7s
build-windows (windows, x64, release, 14.1)	1m 13s
	15m 56s

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