Add Apple visionOS support #1080

Job	Run time
Rustfmt	5s
Clippy	6s
Check (aarch64-apple-darwin)	29s
Test (stable)	14s
Check (aarch64-apple-ios)	30s
Test (1.63.0)	1m 46s
Check (aarch64-apple-tvos)	29s
Test (beta)	18s
Check (aarch64-apple-visionos)	29s
Test (nightly)	19s
Check (aarch64-apple-watchos)	29s
Test (macos)	18s
Check (aarch64-linux-android)	32s
Test (windows)	2m 1s
Check (aarch64-unknown-freebsd)	29s
Check (aarch64-unknown-linux-gnu)	29s
Check (aarch64-unknown-linux-musl)	30s
Check (aarch64-unknown-netbsd)	32s
Check (aarch64-unknown-openbsd)	32s
Check (aarch64-unknown-redox)	33s
Check (arm-linux-androideabi)	27s
Check (arm64_32-apple-watchos)	35s
Check (armv7-linux-androideabi)	29s
Check (armv7-sony-vita-newlibeabihf)	33s
Check (i686-linux-android)	35s
Check (i686-unknown-hurd-gnu)	30s
Check (i686-unknown-linux-gnu)	31s
Check (sparcv9-sun-solaris)	26s
Check (x86_64-apple-darwin)	30s
Check (x86_64-apple-ios)	34s
Check (x86_64-pc-solaris)	31s
Check (x86_64-pc-windows-msvc)	27s
Check (x86_64-unknown-dragonfly)	30s
Check (x86_64-unknown-freebsd)	28s
Check (x86_64-unknown-fuchsia)	30s
Check (x86_64-unknown-illumos)	29s
Check (x86_64-unknown-linux-gnu)	29s
Check (x86_64-unknown-linux-musl)	29s
Check (x86_64-unknown-netbsd)	30s
Check (x86_64-unknown-openbsd)	31s
Check (x86_64-unknown-redox)	30s
	21m 44s

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