Export functions for creating Timepoint/Duration #3772

Job	Run time
build-fuzz	1m 22s
check-git-rev-deps	6s
build-and-test (msrv, ubuntu-latest, x86_64-unknown-linux-gnu)	4m 39s
cargo-deny (advisories)	3m 5s
build-and-test (msrv, ubuntu-latest, aarch64-unknown-linux-gnu, true)	2m 22s
docs	2m 45s
cargo-deny (bans licenses sources)	3m 11s
build-and-test (msrv, macos-latest, x86_64-apple-darwin)	21m 15s
fmt	5s
build-and-test (msrv, macos-latest, aarch64-apple-darwin)	12m 30s
build-and-test (msrv, windows-latest, x86_64-pc-windows-msvc)	14m 15s
publish-dry-run	0s
build-and-test (latest, ubuntu-latest, x86_64-unknown-linux-gnu)	4m 14s
readme	1m 13s
build-and-test (latest, ubuntu-latest, aarch64-unknown-linux-gnu, true)	2m 8s
rust-analyzer-compat	2m 20s
semver-checks	4m 6s
build-and-test (latest, macos-latest, x86_64-apple-darwin)	16m 5s
build-and-test (latest, macos-latest, aarch64-apple-darwin)	18m 18s
build-and-test (latest, windows-latest, x86_64-pc-windows-msvc)	13m 35s
complete	1s
	2h 7m 35s

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