added google analytics 4 integration

Author: LuSilvaDeveloper

.env-template

@@ -7,3 +7,4 @@ NEXT_PUBLIC_MAILCHIMP_URL={Add the url link}
 NEXT_PUBLIC_RECAPTCHA_SITE_KEY={Add the key}
 RECAPTCHA_SECRET_KEY={Add the key}
 SENDGRID_API_KEY={Add the key}
+NEXT_PUBLIC_GA_MEASUREMENT_ID={Add the key}