pkcs8

der: introduce an `AnyLike` trait to mark parameters #3029

Job	Run time
build (1.72.0, thumbv7em-none-eabi)	57s
build (1.72.0, wasm32-unknown-unknown)	48s
minimal-versions	0s
build (stable, thumbv7em-none-eabi)	53s
build (stable, wasm32-unknown-unknown)	39s
test (1.72.0)	3m 35s
test (stable)	3m 40s
	10m 32s

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