engine: wscript: add an ability to build with SDL3 #2343

Job	Run time
flatpak (su.xash.Engine.Compat.i386)	4m 5s
build (ubuntu-20.04, linux, amd64)	3m 13s
build (ubuntu-20.04, linux, i386)	3m 42s
build (ubuntu-20.04, android, multiarch)	7m 10s
build (ubuntu-latest, nswitch, arm64)	3m 16s
build (ubuntu-latest, psvita, armv7hf)	7m 41s
build (windows-latest, win32, amd64)	2m 29s
build (windows-2019, win32, i386)	2m 14s
build (macos-14, apple, arm64)	46s
build (macos-12, apple, amd64)	1m 8s
Upload releases	49s
	36m 33s

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