build

add author_date and committer_date revset functions #12329

Job	Run time
Clippy check	3m 16s
build (ubuntu-latest)	4m 5s
Check protos	37s
Build jj-lib without Git support	53s
build (macos-14)	3m 39s
Check that MkDocs can build the docs	24s
build (windows-latest)	9m 46s
build (ubuntu-latest, --all-features)	5m 6s
Check that MkDocs can build the docs with Poetry 1.8	19s
Check formatting	14s
cargo-deny (advisories)	27s
cargo-deny (bans licenses sources)	23s
	29m 9s

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