crmf

sec1: migrate from `generic-array` to `hybrid-array` #979

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	1m 47s
build (1.65.0, wasm32-unknown-unknown)	1m 50s
build (stable, thumbv7em-none-eabi)	26s
build (stable, wasm32-unknown-unknown)	31s
test (1.65.0)	3m 20s
test (stable)	1m 40s
minimal-versions / minimal-versions	1m 22s
	10m 56s

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