add support for sending media

Still needs camera support.

pubspec.yaml

@@ -37,8 +37,7 @@ dependencies:
   path_provider: 2.1.6
   url_launcher: 6.3.2
   freezed_annotation: 3.1.0
-  image_picker: 1.2.3
-  file_picker: 12.0.0-beta.7
+  image_picker: ^1.2.3
   path: 1.9.1
   dynamic_color: 1.8.1
   collection: 1.19.1
@@ -78,6 +77,7 @@ dependencies:
   xdg_directories: 1.1.0
   package_info_plus: 10.2.1
   app_links: 7.2.1
+  file_selector: ^1.1.0
   
 dev_dependencies:
   build_runner: ^2.15.1