add bardcode scanner plugin package

Frontend/pubspec.yaml

@@ -61,6 +61,8 @@ dependencies:
   table_calendar: ^3.1.2
   flutter_swipe_detector: ^2.0.0
   youtube_player_iframe: ^5.2.0
+  syncfusion_flutter_barcodes: ^26.2.10
+  simple_barcode_scanner: ^0.2.5
   
 dev_dependencies:
   flutter_test:
@@ -90,6 +92,7 @@ flutter:
   # To add assets to your application, add an assets section, like this:
   assets:
     - images/
+    - images/loyalty_cards/
     # - images/a_dot_ham.jpeg
 
   # An image asset can refer to one or more resolution-specific "variants", see