login screen background and autofill hints

pubspec.yaml

@@ -64,6 +64,7 @@ flutter:
   # To add assets to your application, add an assets section, like this:
   assets:
     - secrets.env
+    - assets/nekro_wallpaper.jpg
 
   # An image asset can refer to one or more resolution-specific "variants", see
   # https://flutter.dev/assets-and-images/#resolution-aware