feat(primitives): implement `map` module #2011

Job	Run time
wasm	16s
miri --no-default-features	4m 37s
test ubuntu-latest stable --no-default-features	1m 4s
miri	5m 9s
test ubuntu-latest stable	54s
check no_std	35s
miri --all-features	6m 44s
test ubuntu-latest nightly --no-default-features	55s
test ubuntu-latest nightly	55s
clippy	51s
docs	36s
feature-checks-all-targets	2m 23s
test ubuntu-latest 1.79 --no-default-features	26s
test ubuntu-latest 1.79	33s
fmt	12s
test windows-latest stable --no-default-features	3m 1s
feature-checks	1m 44s
test windows-latest stable	1m 58s
test windows-latest nightly --no-default-features	2m 12s
test windows-latest nightly	1m 40s
test windows-latest 1.79 --no-default-features	1m 10s
test windows-latest 1.79	1m 20s
test ubuntu-latest 1.79 --features json	31s
test windows-latest 1.79 --features json	1m 34s
test ubuntu-latest nightly --all-features	1m 14s
test windows-latest nightly --all-features	2m 24s
	44m 58s

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