Add `zip_clones`, zips an iterator with clones of a value #1044

Job	Run time
check format	10s
doc	7s
check	12s
miri	3m 23s
check (--no-default-features)	7s
msrv	49s
semver-checks	13s
check (--no-default-features --features use_alloc)	7s
check (--all-targets --all-features)	30s
test	49s
All checks succeeded	1s
	6m 28s

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