feat(utils,ui): enhance category mapping for tickets

- Updated category mapping in utils.py to include additional categories: 'broken_streetlight', 'drainage', 'pothole', 'signage', and 'streetlight'.
- Implemented a new mapping function in app.js to align backend categories with frontend display values, ensuring consistent data representation across the application.
- Removed an outdated image file and added a new image file to the uploads directory.

backend/app/utils.py

@@ -99,7 +99,12 @@ def ticket_to_dict(ticket, request=None) -> dict:
     # Map category to expected values
     category_mapping = {
         "Unknown": "other",
-        "garbage": "trash"
+        "garbage": "trash",
+        "broken_streetlight": "streetlight",
+        "drainage": "drainage",
+        "pothole": "pothole",
+        "signage": "signage",
+        "streetlight": "streetlight"
     }
 
     return {