Add inbox send fetch claim show commands

internal/cli/inbox/root.go

@@ -23,6 +23,10 @@ func NewRootCmd() *cobra.Command {
 	cmd.PersistentFlags().StringVar(&opts.agent, "agent", "", "Agent identity")
 
 	cmd.AddCommand(newInitCmd(opts))
+	cmd.AddCommand(newSendCmd(opts))
+	cmd.AddCommand(newFetchCmd(opts))
+	cmd.AddCommand(newClaimCmd(opts))
+	cmd.AddCommand(newShowCmd(opts))
 
 	return cmd
 }