add cloudflare web analytics

Author: Cooooing

themes/keep/layout/_partial/head.ejs

@@ -63,4 +63,8 @@
     <script charset="UTF-8" id="LA_COLLECT" src="//sdk.51.la/js-sdk-pro.min.js"></script>
     <script>LA.init({id: "3JwPz6wbAloyTmMc", ck: "3JwPz6wbAloyTmMc", autoTrack: true})</script>
 
+    <!-- Cloudflare Web Analytics -->
+    <script defer src='https://static.cloudflareinsights.com/beacon.min.js' data-cf-beacon='{"token": "281999cc46a948d3b8199c1eb621f11e"}'></script>
+    <!-- End Cloudflare Web Analytics -->
+
 </head>