build

Add background snapshotting info to `debug watchman status`. #11886

Job	Run time
Build jj-lib without Git support	1m 53s
build (ubuntu-latest)	4m 1s
build (macos-14)	5m 14s
Check protos	52s
build (windows-latest)	10m 8s
Check that MkDocs can build the docs	32s
Check that MkDocs can build the docs with Poetry 1.8	45s
build (ubuntu-latest, --all-features)	5m 19s
Check formatting	15s
cargo-deny (advisories)	24s
Clippy check	2m 24s
cargo-deny (bans licenses sources)	25s
	32m 12s

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