Made the Connection panel more usable for runtime testing

internal/playback/session_plan.go

@@ -10,6 +10,19 @@ const (
 	TopologySynchronized
 )
 
+func (t SessionTopology) String() string {
+	switch t {
+	case TopologyIdle:
+		return "idle"
+	case TopologyIndependent:
+		return "independent"
+	case TopologySynchronized:
+		return "synchronized"
+	default:
+		return fmt.Sprintf("SessionTopology(%d)", uint8(t))
+	}
+}
+
 type SyncPredicate func(video, audio FeedConfig) bool
 
 type SessionPlan struct {