Add F16 precision toolkit (AVX2) + ARM NEON specialist agent #147

Job	Run time
native-backend/stable	38s
Pass MSRV values to other jobs	2s
format/stable	20s
clippy/stable	21s
nostd/thumbv6m-none-eabi/stable	30s
cross_test/i686-unknown-linux-gnu/stable	1m 41s
cross_test/s390x-unknown-linux-gnu/stable	1m 47s
docs/nightly	0s
cargo-careful	0s
miri	0s
blas-msrv	1m 8s
tests/1.64.0	1m 4s
tests/stable	49s
tests/beta	54s
conclusion	-1s
	9m 13s

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