KAT-51: Added image_picker library in pubspec.yaml and did pub get to download it

rescueapp/pubspec.yaml

@@ -23,7 +23,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-
+  image_picker:
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.