add login

pubspec.yaml

@@ -15,6 +15,7 @@ dependencies:
   flutter_riverpod: ^1.0.3
   shared_preferences: ^2.0.12
   synchronized: ^3.0.0
+  back_button_interceptor: ^5.0.2
 
 dev_dependencies:
   flutter_test:
@@ -31,9 +32,8 @@ flutter:
   uses-material-design: true
 
   # To add assets to your application, add an assets section, like this:
-  # assets:
-  #   - images/a_dot_burr.jpeg
-  #   - images/a_dot_ham.jpeg
+  assets:
+    - assets/images/
 
   # An image asset can refer to one or more resolution-specific "variants", see
   # https://flutter.dev/assets-and-images/#resolution-aware.