[WIP] blake2: integrate `blake2b_simd`/`blake2s_simd` crates #639

Job	Run time
minimal-versions / minimal-versions	40s
set-msrv / set-msrv	3s
build (1.85.0, wasm32-unknown-unknown)	20s
build (stable, thumbv7em-none-eabi)	25s
build (1.85.0, thumbv7em-none-eabi)	24s
build (stable, wasm32-unknown-unknown)	24s
test (1.85.0)	26s
test (stable)	25s
	3m 7s

Provide feedback