rose slv: CLI rejig

Fix #730.

Yet another `rose suit-hook` and `rose slv` library rejig.

`rose slv` CLI rationalised. Support distinct view and update mode. Update mode arguments can be a `*` for all task jobs, cycle times or task IDs.

Introduce an archive mode and drop `--log-archive-threshold`.

Introduce a tidy remote mode to remove job logs from remote hosts after retrieval.