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;

src/BusProNet/XmlParser/BookingsParser.php

@@ -21,6 +21,7 @@ class BookingsParser extends AbstractParser
             $booking = new Booking();
 
             $booking->id = $this->getIntOrNullValue($node->filterXPath('//id'));
+            $booking->applicantId = $this->getIntOrNullValue($node->filterXPath('//idadresse_anmelder'));
             $booking->bookingNumber = $this->getIntOrNullValue($node->filterXPath('//vorgangsnummer'));
             $booking->status = $this->getStringOrNullValue($node->filterXPath('//status'));
             $booking->participantCount = $this->getIntOrNullValue($node->filterXPath('//personen'));