Add CI/CD for iOS, tvOS, and their simulators (#218) #725

Job	Run time
Rocky Linux MinGW	1m 17s
FreeBSD	1m 20s
iOS/tvOS SDL3 (iOS, iphoneos, arm64)	48s
Rocky Linux	1m 53s
iOS/tvOS SDL3 (iOS, iphonesimulator, x86_64;arm64)	1m 6s
Rocky Linux MinGW SDL3	1m 16s
iOS/tvOS SDL3 (tvOS, appletvos, arm64)	49s
Rocky Linux SDL3	1m 16s
iOS/tvOS SDL3 (tvOS, appletvsimulator, x86_64;arm64)	59s
macOS (x86_64)	31s
macOS (Universal) SDL3	1m 5s
Windows (MSVC)	1m 3s
	13m 23s

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