feat: add Goat Counter analytics

Author: kOaDT

docs/src/layouts/Layout.astro

@@ -174,5 +174,12 @@ const structuredData = {
 
     <!-- Load full theme logic -->
     <script src="../scripts/theme.ts"></script>
+
+    <!-- Goat Counter Analytics -->
+    <script
+      data-goatcounter="https://oss.goatcounter.com/count"
+      async
+      src="//gc.zgo.at/count.js"
+      is:inline></script>
   </body>
 </html>