wip: implement transportation, pickups and parking

src/Form/Service/ParticipantFieldHandlerRegistry.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace App\Form\Service;
 
+use App\BusProNet\Model\Pickup;
 use App\BusProNet\Model\Service;
 use App\Form\Model\BookingDtoInterface;
 use App\Form\Model\ParticipantDto;
@@ -339,6 +340,11 @@ class ParticipantFieldHandlerRegistry
             return $value->id;
         }
 
+        // Handle Pickup objects -> convert to ID
+        if ($value instanceof Pickup) {
+            return $value->id;
+        }
+
         // Handle DateTimeInterface -> convert to string format
         if ($value instanceof \DateTimeInterface) {
             return $value->format('Y-m-d');