feat: remove easy admin bundle, adopt admin theme

templates/_partials/_dropdown.html.twig

@@ -0,0 +1,13 @@
+<div class="relative inline-block text-left group">
+    <button type="button" class="flex items-center text-gray-400 hover:text-gray-600 focus:outline-none focus:ring-0" aria-expanded="true" aria-haspopup="true">
+        <span class="sr-only">Funktionen</span>
+        {{ icon('dots', 'w-6 h-6') }}
+    </button>
+    <div class="hidden group-hover:block absolute right-0 top-0 z-10 w-56 origin-top-right pt-4" role="menu" aria-orientation="vertical" aria-labelledby="menu-button" tabindex="-1">
+        <div class="rounded-md bg-white shadow-lg ring-1 ring-black ring-opacity-5 focus:outline-none">
+            <div class="py-1 menu menu--pulldown" role="none">
+                {% block content %}{% endblock %}
+            </div>
+        </div>
+    </div>
+</div>