Added `array_permutations` (attempt 2) #1081

Job	Run time
miri	3m 27s
doc	13s
check	14s
msrv	36s
check (--no-default-features)	14s
test	55s
check (--no-default-features --features use_alloc)	13s
check format	12s
check (--all-targets --all-features)	23s
semver-checks	18s
All checks succeeded	0s
	6m 45s

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