feat: voucher purchase flow

config/services.yaml

@@ -238,6 +238,25 @@ services:
             $cache: '@cache.app'
             $logger: '@monolog.logger.bpn'
 
+    # Voucher purchase flow (/gutschein)
+    App\Service\VoucherTemplateProvider:
+        arguments:
+            $cache: '@bpn.cache'
+            $logger: '@monolog.logger.bpn'
+
+    App\Service\VoucherThumbnailResolver:
+        arguments:
+            $manifestPath: '%kernel.project_dir%/public/build/manifest.json'
+            $logger: '@monolog.logger.bpn'
+
+    App\Controller\Voucher\Step1Controller:
+        arguments:
+            $logger: '@monolog.logger.bpn'
+
+    App\Controller\Voucher\Step3Controller:
+        arguments:
+            $logger: '@monolog.logger.bpn'
+
     # Field Handlers with dependencies
     App\Form\Service\ParticipantInsuranceFieldHandler: ~
     App\Form\Service\ParticipantBulkInsuranceFieldHandler: ~