Implement aarch64 SHA-1/SHA-512 LLVM intrinsics #1820

Job	Run time
abi_cafe (macos-15-intel, x86_64-apple-darwin)	30m 10s
abi_cafe (ubuntu-latest, x86_64-unknown-linux-gnu)	6m 15s
abi_cafe (ubuntu-24.04-arm, aarch64-unknown-linux-gnu)	5m 53s
abi_cafe (macos-latest, aarch64-apple-darwin)	8m 33s
abi_cafe (windows-latest, x86_64-pc-windows-msvc)	10m 25s
	1h 1m 16s

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