sha2: wasm32 simd128 backends #1232

Job	Run time
riscv64-zknh	1m 52s
riscv32-zknh	1m 33s
set-msrv / set-msrv	5s
minimal-versions / minimal-versions	48s
windows (1.79.0, x86_64-pc-windows-gnu)	1m 6s
macos (1.79.0)	41s
windows (stable, x86_64-pc-windows-gnu)	2m 45s
linux (i686-unknown-linux-gnu, 1.79.0, sudo apt update && sudo apt install gcc-multilib)	1m 7s
macos (stable)	29s
build (1.79.0, thumbv7em-none-eabi)	26s
linux (i686-unknown-linux-gnu, stable, sudo apt update && sudo apt install gcc-multilib)	58s
build (1.79.0, wasm32-unknown-unknown)	28s
linux (x86_64-unknown-linux-gnu, 1.79.0)	43s
build (1.79.0, loongarch64-unknown-linux-gnu)	20s
cross (1.79.0, aarch64-unknown-linux-gnu, default)	39s
wasm (1.79.0, -C target-feature=-simd128)	58s
linux (x86_64-unknown-linux-gnu, stable)	41s
build (stable, thumbv7em-none-eabi)	20s
cross (1.79.0, powerpc-unknown-linux-gnu, default)	42s
wasm (stable, -C target-feature=-simd128)	1m 17s
build (stable, wasm32-unknown-unknown)	24s
cross (stable, aarch64-unknown-linux-gnu, default)	51s
wasm (1.79.0, -C target-feature=+simd128)	38s
build (stable, loongarch64-unknown-linux-gnu)	31s
cross (stable, powerpc-unknown-linux-gnu, default)	38s
wasm (stable, -C target-feature=+simd128)	38s
	21m 38s

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