Create android & web plugins (#15)

* create android & web plugins

* apply `flutter format .`

example/lib/widgets/controls.dart

@@ -89,7 +89,8 @@ class _ControlsWidgetState extends State<ControlsWidget> {
 
   void _toggleCamera() async {
     //
-    final track = participant.videoTracks.firstOrNull?.track as LocalVideoTrack?;
+    final track =
+        participant.videoTracks.firstOrNull?.track as LocalVideoTrack?;
     if (track == null) return;
 
     try {
@@ -113,7 +114,8 @@ class _ControlsWidgetState extends State<ControlsWidget> {
     }
 
     try {
-      final screenTrack = await LocalVideoTrack.createScreenTrack(); // Defaults to camera
+      final screenTrack =
+          await LocalVideoTrack.createScreenTrack(); // Defaults to camera
       await widget.room.localParticipant.publishVideoTrack(
         screenTrack,
       );
@@ -177,7 +179,9 @@ class _ControlsWidgetState extends State<ControlsWidget> {
             icon: const Icon(EvaIcons.videoOff),
           ),
         IconButton(
-          icon: Icon(position == CameraPosition.back ? EvaIcons.camera : EvaIcons.person),
+          icon: Icon(position == CameraPosition.back
+              ? EvaIcons.camera
+              : EvaIcons.person),
           onPressed: () => _toggleCamera(),
         ),
         IconButton(

example/lib/widgets/participant.dart

@@ -50,7 +50,8 @@ class _ParticipantWidgetState extends State<ParticipantWidget> {
   // register for change so Flutter will re-build the widget upon change
   void _onParticipantChanged() {
     //
-    final firstAudio = widget.participant.audioTracks.firstWhereOrNull((pub) => pub.subscribed);
+    final firstAudio = widget.participant.audioTracks
+        .firstWhereOrNull((pub) => pub.subscribed);
     final firstVideo = widget.participant.videoTracks
         .firstWhereOrNull((pub) => !pub.isScreenShare && pub.subscribed);