Add Google Analytics

Author: compulim

packages/playground/public/index.html

@@ -37,4 +37,16 @@
       To create a production bundle, use `npm run build` or `yarn build`.
     -->
   </body>
+  <!-- Global site tag (gtag.js) - Google Analytics -->
+  <script async src="https://www.googletagmanager.com/gtag/js?id=UA-119462943-1"></script>
+  <script>
+    window.dataLayer = window.dataLayer || [];
+
+    function gtag() {
+      dataLayer.push(arguments);
+    }
+
+    gtag('js', new Date());
+    gtag('config', 'UA-119462943-1');
+  </script>
 </html>