feat: Show the username of the created users from each token

templates/main/index.html.twig

@@ -52,6 +52,10 @@
         <a href="{{ path('app_register', { id: token.id }) }}">
           {{ token.id }}
         </a>
+        {% if token.user is not null %}
+        |
+        {{ token.user.username }}
+        {% endif %}
         {#<a
           hx-delete="{{ path('app_fap_delete', { id: entry.id }) }}"
           hx-target="#fap-statistics-container"