JIT: ARM64 - Added SVE APIs `ExtractLastVector`, `ExtractLastScalar`, `ExtractAfterLastVector`, `ExtractAfterLastScalar` #20

Job	Run time
format (linux, ubuntu-latest, mcr.microsoft.com/dotnet-buildtools/prereqs:azurelinux-3.0-cross-am...	2m 11s
format (windows, windows-latest, .cmd)	2m 23s
	4m 34s

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