sha1: port `sha1-asm` to `arch` intrinsics (#596) #1023

Job	Run time
minimal-versions / minimal-versions	37s
set-msrv / set-msrv	2s
build (1.71.0, thumbv7em-none-eabi)	17s
build (1.71.0, wasm32-unknown-unknown)	21s
test (1.71.0)	42s
build (stable, thumbv7em-none-eabi)	12s
test (stable)	56s
build (stable, wasm32-unknown-unknown)	13s
	3m 20s

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