chore: add gtag manager into the site to add analytics

Author: danielbarion

docs/docusaurus.config.js

@@ -48,6 +48,10 @@ const config = {
         theme: {
           customCss: require.resolve('./src/css/custom.css'),
         },
+        gtag: {
+          trackingID: 'G-N15QWWS0MW',
+          anonymizeIP: false,
+        },
       }),
     ],
   ],