Add map and set `extract_if` #421

Job	Run time
Check MSRV and minimal-versions	42s
nostd_build (1.63.0, thumbv6m-none-eabi)	58s
miri	4m 45s
nostd_build (stable, thumbv6m-none-eabi)	8s
clippy	17s
tests (1.63.0)	1m 26s
tests (stable, arbitrary)	31s
tests (stable, quickcheck)	35s
tests (stable, rayon)	44s
tests (stable, rustc-rayon)	39s
tests (stable, serde)	40s
tests (stable, borsh)	33s
tests (stable, std)	30s
tests (beta)	41s
tests (nightly, test build benchmarks)	36s
Success	2s
	13m 47s

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