feat: show assignment id

templates/administrative/assignment/duplicate.html.twig

@@ -4,7 +4,7 @@
 
 {% block content %}
     <h1 class="text-2xl font-bold pb-8">
-        Einsatz duplizieren
+        Einsatz duplizieren #{{ assignment.id }}
     </h1>
     {% include 'administrative/assignment/_form.html.twig' %}
 {% endblock %}