Add label attribute

Resources/views/Badge.html.twig

@@ -1,3 +1,7 @@
 <div {{ attributes }} class="{{ this.finalClasses }}">
-    {% block content %}{% endblock %}
+    {% if block('content') is not empty %}
+        {% block content %}{% endblock %}
+    {% else %}
+        {{- this.label -}}
+    {% endif %}
 </div>