impl(sprint-13/W-I4): D-CSV-17 — rayon par_* variants for hpc::stream #288

Job	Run time
hpc-stream-parallel/rayon	1m 47s
clippy/1.95.0	39s
nostd/thumbv6m-none-eabi/stable	26s
native-backend/stable	8m 18s
format/stable	21s
Pass MSRV values to other jobs	3s
miri	0s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	0s
cargo-careful	0s
docs/nightly	0s
blas-msrv	55s
tests/1.95.0	10m 41s
tests/beta	10m 45s
tests/stable	9m 13s
conclusion	-1s
	43m 7s

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