Add help for a few commands

commands.go

@@ -50,6 +50,7 @@ func setupCommands() {
 
 	snap := Command{
 		Name:          "Snap",
+		Help: "Trigger a purge!",
 		RequiresAdmin: false,
 		Keywords:      []string{"snap", "purge", "sn"},
 		Exec:          Snap,
@@ -59,6 +60,7 @@ func setupCommands() {
 	status := Command{
 		Name:          "Status",
 		RequiresAdmin: true,
+		Help: "Show the current status of Thanos/Verifications and probations",
 		Keywords:      []string{"st", "status", "stats"},
 		Exec:          Status,
 	}