Add `ArrayVecCopy` #217

Job	Run time
miri	32s
tests (1.51.0, serde, false, --skip spare_capacity_mut)	29s
nostd/thumbv6m-none-eabi/stable	12s
check-generated	3s
tests (1.70.0, serde, false)	17s
tests (stable, true, false)	14s
tests (beta, serde, false)	16s
tests (nightly, serde, borsh, zeroize, false)	18s
	2m 21s

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