wip: booking process, room assignment

src/Form/Model/ParticipantDto.php

@@ -37,6 +37,10 @@ class ParticipantDto
     public ?string $email = null;
 
     public ?string $mobile = null;
+
+    #[Assert\NotNull(message: 'Bitte ein Zimmer auswählen', groups: ['booking_create_step_2'])]
+    public ?int $assignedRoomId = null;
+
     public array $courses = [];
     public array $additionalServices = [];
     public array $skiPass = [];