Teilnehmlogik grundlegend fertiggestellt

core/templates/play/initialize_participant.html

@@ -5,6 +5,8 @@
 <div class="input-group  border-blue-600 border-2 rounded-xl shadow-md">
     <form method="post">
         {% csrf_token %}
+        <input type="hidden" name="join_code" value="{{join_code}}">
+        <input type="text" name="display_name" placeholder="Anzeigename">
         <button type="submit">Speichern</button>
     </form>
 </div>