Add option to delete webhooks.

resources/views/webhooks/show.twig

@@ -0,0 +1,14 @@
+{% set VUE_SCRIPT_NAME = 'webhooks/show' %}
+{% extends './layout/default' %}
+{% block breadcrumbs %}
+    {{ Breadcrumbs.render(Route.getCurrentRoute.getName, webhook) }}
+{% endblock %}
+
+{% block content %}
+    <div id="webhooks_show"></div>
+{% endblock %}
+{% block scripts %}
+    <script type="text/javascript" nonce="{{ JS_NONCE }}">
+        var previousUrl = '{{ previousUrl }}';
+    </script>
+{% endblock %}