Add Microsoft Clarity tracking code

Author: whimet

src/index.html

@@ -23,6 +23,15 @@
     <script src="lib/gtm.js"></script>
     <!-- End Google Tag Manager -->
 
+    <!-- Microsoft Clarity -->
+    <script type="text/javascript">
+        (function(c,l,a,r,i,t,y){
+            c[a]=c[a]||function(){(c[a].q=c[a].q||[]).push(arguments)};
+            t=l.createElement(r);t.async=1;t.src="https://www.clarity.ms/tag/"+i;
+            y=l.getElementsByTagName(r)[0];y.parentNode.insertBefore(t,y);
+        })(window, document, "clarity", "script", "ml3oonlmsx");
+    </script>
+
     <% if (htmlWebpackPlugin.options.manifest.theme_color) { %>
     <meta
       name="theme-color"