feat: groups price calculator admin crud, booking/offer flow and api

templates/components/dropdown/index.html.twig

@@ -0,0 +1,20 @@
+<div class="relative inline-block text-left group cursor-pointer">
+    <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>