build

cli: add `jj operation show` command #12462

Job	Run time
Build jj-lib without Git support	44s
Check formatting	16s
Check protos	27s
build (ubuntu-latest)	4m 18s
build (macos-14)	3m 39s
cargo-deny (advisories)	24s
build (windows-latest)	9m 24s
cargo-deny (bans licenses sources)	22s
Clippy check	2m 43s
build (ubuntu-latest, --all-features)	5m 23s
Check that MkDocs can build the docs	28s
Check that MkDocs can build the docs with Poetry 1.8	20s
	28m 28s

Provide feedback