Add a simple SVE-based non-temporal copy for AArch64 #1107

Job	Run time
coverage	33s
test-cxx (ubuntu-20.04, g++-9, enabled)	24s
lint	58s
test-cxx (ubuntu-22.04, g++-12, enabled)	23s
all-builds	18m 34s
test-python (ubuntu-20.04, gcc-9, g++-9, 3.8, enabled)	51s
test-cxx (ubuntu-20.04, clang++-10, enabled)	39s
test-cxx (ubuntu-22.04, clang++-14, enabled)	29s
test-python (ubuntu-22.04, gcc-12, g++-12, 3.12, enabled)	38s
test-cxx (macos-14, clang++, disabled)	1m 20s
test-python (ubuntu-20.04, clang-10, clang++-10, 3.12, enabled)	41s
test-python (ubuntu-22.04, clang-14, clang++-14, 3.12, enabled)	1m 29s
test-python (macos-14, clang, clang++, 3.12, disabled)	49s
sdist	0s
cibuildwheel-macos	0s
cibuildwheel-linux	0s
combine	0s
	27m 48s

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