build

Add a --use-destination-message option to `jj squash` #10496

Job	Run time
cargo-deny (advisories)	25s
build (ubuntu-latest)	4m 7s
Check protos	34s
build (macos-14)	2m 59s
cargo-deny (bans licenses sources)	27s
build (windows-latest)	8m 11s
Clippy check	2m 28s
build (ubuntu-latest, --all-features)	5m 3s
Check that MkDocs can build the docs	26s
Check formatting	17s
Check that MkDocs can build the docs with Poetry 1.3.2	33s
	25m 30s

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