Add CI/CD for iOS, tvOS, and their simulators #724

Job	Run time
FreeBSD	1m 15s
Rocky Linux MinGW	1m 17s
Rocky Linux	1m 53s
iOS/tvOS SDL3 (iOS, iphoneos, arm64)	45s
Rocky Linux MinGW SDL3	1m 18s
iOS/tvOS SDL3 (iOS, iphonesimulator, x86_64;arm64)	1m 12s
Rocky Linux SDL3	1m 13s
macOS (x86_64)	33s
macOS (Universal) SDL3	1m 3s
iOS/tvOS SDL3 (tvOS, appletvos, arm64)	47s
iOS/tvOS SDL3 (tvOS, appletvsimulator, x86_64;arm64)	1m 0s
Windows (MSVC)	1m 24s
	13m 40s

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