feat: implement payment step

src/Form/Model/ParticipantDto.php

@@ -12,6 +12,28 @@ use Symfony\Component\Validator\Constraints as Assert;
 #[AppAssert\Participant(groups: ['booking_edit', 'booking_create_step_2'])]
 class ParticipantDto
 {
+    /**
+     * List of dynamic participant fields that can be conditionally hidden/shown.
+     */
+    public const DYNAMIC_FIELDS = [
+        'assignedRoomId',
+        'remarksRoom',
+        'courses',
+        'additionalServices',
+        'board',
+        'rentals',
+        'rentalInsurance',
+        'skiPass',
+        'transportationOutbound',
+        'transportationInbound',
+        'pickupOutbound',
+        'pickupInbound',
+        'parking',
+        'licensePlate',
+        'bulkInsuranceBooking',
+        'insurance',
+    ];
+
     public ?int $index = null;
     public ?int $addressId = null;
     public ?int $personId = null;