feat: restrict access to booking edit and invoice to applicant

src/BusProNet/Model/Booking.php

@@ -8,6 +8,7 @@ class Booking
     public ?int $agencyId = null;
     public ?int $bookingNumber = null;
     public ?string $status = null;
+    public ?int $applicantId = null;
     public ?PersonalData $applicant = null;
     public ?int $participantCount = null;
     public ?float $price = null;