Add proboctl catalog upsert, link, and describe commands

Operators previously had no way to curate the global tracker catalog
beyond inspection and banner-scoped resets. Add three proboctl commands
backed by small coredata helpers:

- common-third-party upsert: create or update a vendor keyed by slug,
  with partial-merge so an unset flag never blanks an existing column.
- common-tracker-pattern link/unlink: repoint catalog rows at a common
  third party (re-arming enrichment and remapping the uncategorised org
  trackers so the mapping worker re-resolves the vendor) or detach them.
  Unlinking skips enrichment and remap since there is no new vendor.
- common-tracker-pattern set-description: write a description, mark the
  row enriched, and backfill linked org patterns lacking one.

Signed-off-by: Émile Ré <emile@probo.com>

pkg/proboctl/commontrackerpattern/commontrackerpattern.go

@@ -39,6 +39,9 @@ func NewCmdCommonTrackerPattern(f *cmdutil.Factory) *cobra.Command {
 	cmd.AddCommand(newCmdShow(f))
 	cmd.AddCommand(newCmdReenrich(f))
 	cmd.AddCommand(newCmdStats(f))
+	cmd.AddCommand(newCmdLink(f))
+	cmd.AddCommand(newCmdUnlink(f))
+	cmd.AddCommand(newCmdSetDescription(f))
 
 	return cmd
 }