build

cli: add `jj operation show` and `jj operation diff` commands #10861

Job	Run time
Clippy check	2m 24s
Check protos	32s
cargo-deny (advisories)	26s
build (ubuntu-latest)	3m 40s
cargo-deny (bans licenses sources)	25s
build (macos-14)	2m 44s
Check that MkDocs can build the docs	24s
Check that MkDocs can build the docs with Poetry 1.3.2	37s
build (windows-latest)	8m 30s
Check formatting	16s
build (ubuntu-latest, --all-features)	4m 22s
	24m 20s

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