cube: Support runtime selection of WSI platform #110

Job	Run time
chromium	1m 28s
android (armeabi-v7a)	36s
codegen	25s
linux (gcc, g++, Debug, ubuntu-20.04)	1m 3s
android (arm64-v8a)	28s
linux (gcc, g++, Debug, ubuntu-22.04)	1m 4s
mac	12m 46s
mingw	1m 27s
linux (gcc, g++, Release, ubuntu-20.04)	50s
linux (gcc, g++, Release, ubuntu-22.04)	55s
tools_codegen	40s
windows (Win32, Debug, windows-latest)	2m 14s
linux (clang, clang++, Debug, ubuntu-20.04)	48s
windows (Win32, Release, windows-latest)	2m 11s
linux (clang, clang++, Release, ubuntu-22.04)	49s
windows (x64, Debug, windows-latest)	2m 13s
windows (x64, Release, windows-latest)	2m 1s
	31m 58s

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