sha1

Implement ZeroizeOnDrop for SHA 1..=2 and Blake2 #869

Job	Run time
cross (1.51.0, aarch64-unknown-linux-gnu, default)	20s
loongarch64_asm	21s
cross (1.51.0, powerpc-unknown-linux-gnu, default)	16s
cross (stable, aarch64-unknown-linux-gnu, default)	34s
cross (stable, powerpc-unknown-linux-gnu, default)	29s
test-msrv	18s
minimal-versions / minimal-versions	20s
set-msrv / set-msrv	3s
build (1.57.0, thumbv7em-none-eabi)	18s
linux (x86_64-unknown-linux-gnu, 1.57.0)	26s
build (1.57.0, wasm32-unknown-unknown)	22s
build (stable, thumbv7em-none-eabi)	17s
linux (x86_64-unknown-linux-gnu, stable)	50s
build (stable, wasm32-unknown-unknown)	32s
windows (x86_64-pc-windows-gnu, stable)	1m 0s
macos (1.57.0)	25s
macos (stable)	9s
	7m 0s

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