Introduce an ArrayLike trait #368

Job	Run time
blas-msrv	23s
clippy/stable	11s
cargo-careful	1m 2s
cross_test/s390x-unknown-linux-gnu/stable	40s
docs/stable	14s
cross_test/i686-unknown-linux-gnu/stable	44s
format/nightly	12s
miri	37s
nostd/thumbv6m-none-eabi/stable	12s
tests/stable	15s
tests/beta	19s
tests/nightly	20s
tests/1.64.0	31s
conclusion	1s
	5m 41s

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