[WIP] blake2: integrate `blake2b_simd`/`blake2s_simd` crates #176

Job	Run time
set-msrv / set-msrv	8s
minimal-versions / minimal-versions	20s
build (1.85.0, thumbv7em-none-eabi)	1s
test (1.85.0)	1s
cross (1.85.0, powerpc-unknown-linux-gnu, default)	1s
build (stable, wasm32-unknown-unknown)	46s
build (1.85.0, wasm32-unknown-unknown)	18s
test (stable)	1s
build (stable, thumbv7em-none-eabi)	14s
cross (stable, aarch64-unknown-linux-gnu, default)	1s
cross (1.85.0, aarch64-unknown-linux-gnu, default)	1s
cross (stable, powerpc-unknown-linux-gnu, default)	52s
	2m 44s

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