feat: promotional and purchase vouchers

config/services.yaml

@@ -67,14 +67,21 @@ services:
             $preferRemote: '%env(bool:APP_TRAVEL_PREFER_REMOTE)%'
             $enableFallback: '%env(bool:APP_TRAVEL_ENABLE_FALLBACK)%'
 
+    App\Service\VoucherValidationService:
+        arguments:
+            $cache: '@cache.app'
+            $logger: '@monolog.logger.bpn'
+
     App\Form\Service\Factory\ParticipantRoomChoiceLoaderFactory:
         arguments:
             $choiceListFactory: '@form.choice_list_factory.default'
 
-    # Insurance Field Handlers with dependencies
+    # Field Handlers with dependencies
     App\Form\Service\ParticipantInsuranceFieldHandler: ~
     App\Form\Service\ParticipantBulkInsuranceFieldHandler: ~
     App\Form\Service\ParticipantTransportationDiscountReplacementFieldHandler: ~
+    App\Form\Service\ParticipantPurchaseVoucherFieldHandler: ~
+    App\Form\Service\ParticipantPromoVoucherFieldHandler: ~
 
     # Participant Field Handler Registry - most handlers instantiate dependencies directly, some use services
     App\Form\Service\ParticipantFieldHandlerRegistry:
@@ -99,6 +106,8 @@ services:
                 - '@App\Form\Service\ParticipantTransportationDiscountReplacementFieldHandler'
                 - '@App\Form\Service\ParticipantBulkInsuranceFieldHandler'
                 - '@App\Form\Service\ParticipantInsuranceFieldHandler'
+                - '@App\Form\Service\ParticipantPurchaseVoucherFieldHandler'
+                - '@App\Form\Service\ParticipantPromoVoucherFieldHandler'
 
     App\Service\CmsDataService:
       arguments: