chore: add gtag script for ads

templates/_partials/head.tpl

@@ -134,6 +134,19 @@ gtag('config', 'G-4MD1MZN5TY');
 </script>
 {/literal}
 
+{literal}
+<!-- Google tag (gtag.js) -->
+<script async src="https://www.googletagmanager.com/gtag/js?id=AW-16651196774">
+</script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+
+  gtag('config', 'AW-16651196774');
+</script>
+{/literal}
+
 
 {block name='hook_header'}
   {$HOOK_HEADER nofilter}