x509-ocsp: remove lifetimes and implement `AsExtension` (#1241) #1080

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	4m 50s
test (1.65.0)	7m 17s
test (stable)	1m 37s
build (1.65.0, wasm32-unknown-unknown)	4m 47s
build (stable, thumbv7em-none-eabi)	15s
build (stable, wasm32-unknown-unknown)	14s
minimal-versions / minimal-versions	2m 8s
	21m 8s

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