build

cli: Refactor out `get_fetch_remotes` into git_util.rs #16592

Job	Run time
build (ubuntu-latest)	5m 10s
build (macos-13)	3m 24s
build (macos-14)	1s
build (windows-latest)	6m 49s
build (ubuntu-latest, --all-features)	5m 34s
Build jj-lib without Git support	47s
Check protos	33s
Check formatting	17s
cargo-deny (advisories)	24s
Clippy check	2m 27s
Check that MkDocs can build the docs	11s
cargo-deny (bans licenses sources)	22s
Check that MkDocs can build the docs with latest Python and uv	9s
	26m 8s

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