TrackPublishedEvent for local tracks

lib/src/participant/local_participant.dart

@@ -76,7 +76,12 @@ class LocalParticipant extends Participant {
 
     final pub = LocalTrackPublication(trackInfo, track, this);
     addTrackPublication(pub);
-    notifyListeners();
+        
+    [events, roomEvents].emit(TrackPublishedEvent(
+      participant: this,
+      publication: pub,
+    ));
+
     return pub;
   }
 
@@ -149,7 +154,11 @@ class LocalParticipant extends Participant {
 
     final pub = LocalTrackPublication(trackInfo, track, this);
     addTrackPublication(pub);
-    notifyListeners();
+
+    [events, roomEvents].emit(TrackPublishedEvent(
+      participant: this,
+      publication: pub,
+    ));
 
     return pub;
   }

lib/src/participant/participant.dart

@@ -141,9 +141,9 @@ abstract class Participant extends DisposableChangeNotifier
   }
 
   // Must implement
-  Future<void> unpublishTrack(String trackSid, {bool notify = false});
+  Future<void> unpublishTrack(String trackSid, {bool notify = true});
 
-  Future<void> unpublishAllTracks({bool notify = false}) async {
+  Future<void> unpublishAllTracks({bool notify = true}) async {
     final trackSids = trackPublications.keys.toSet();
     for (final trackid in trackSids) {
       await unpublishTrack(trackid, notify: notify);

lib/src/participant/remote_participant.dart

@@ -73,7 +73,7 @@ class RemoteParticipant extends Participant {
           reason: TrackSubscribeFailReason.notTrackMetadataFound,
         ),
       );
-      pub = event.publication;
+      pub = event.publication as RemoteTrackPublication;
       logger.fine('addSubscribedMediaTrack() did receive pub');
     }
 
@@ -147,7 +147,7 @@ class RemoteParticipant extends Participant {
     final removeSids =
         trackPublications.keys.where((e) => !validSids.contains(e)).toSet();
     for (final sid in removeSids) {
-      await unpublishTrack(sid, notify: true);
+      await unpublishTrack(sid);
     }
   }