Added `array_permutations` (attempt 2) #1082

Job	Run time
check format	12s
doc	13s
check	13s
check (--no-default-features)	13s
msrv	40s
check (--no-default-features --features use_alloc)	15s
miri	3m 31s
check (--all-targets --all-features)	27s
semver-checks	17s
test	57s
All checks succeeded	0s
	6m 58s

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