chat support update

pubspec.yaml

@@ -42,6 +42,15 @@ dependencies:
   pdf: ^3.11.0
   pusher_channels_flutter: ^2.3.0
   web_socket_channel: ^2.4.0
+  url_launcher: ^6.2.6
+  file_selector: ^1.0.3
+  file_selector_android: ^0.5.0
+  photo_view: ^0.15.0
+  video_player: ^2.9.1
+  chewie: ^1.8.1
+  flutter_pdfview: ^1.3.2
+
+
 
 
   # The following adds the Cupertino Icons font to your application.