feat(routes): add dependency injection for local ad repository

- Add provider for DataRepository<LocalAd> in middleware
- Inject localAdRepository using deps.localAdRepository

Author: fulleni

lib/src/rbac/permissions.dart

@@ -69,10 +69,10 @@ abstract class Permissions {
       'user_preference.bypass_limits';
 
   // Local Ad Permissions
-  static const String localAdCreate = 'localAd.create';
-  static const String localAdRead = 'localAd.read';
-  static const String localAdUpdate = 'localAd.update';
-  static const String localAdDelete = 'localAd.delete';
+  static const String localAdCreate = 'local_ad.create';
+  static const String localAdRead = 'local_ad.read';
+  static const String localAdUpdate = 'local_ad.update';
+  static const String localAdDelete = 'local_ad.delete';
 
   // General System Permissions
   static const String rateLimitingBypass = 'rate_limiting.bypass';