Add Google site verification meta tag

Author: jiarong0907

public/index.html

@@ -14,6 +14,7 @@
     </script>
     <meta charset="utf-8" />
     <link rel="icon" href="%PUBLIC_URL%/routerarena_logo.png" />
+    <meta name="google-site-verification" content="KC7qowG-JGDC4rYL6aI9UJHlVMrmNIqSm4_JwgAS4Mc" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <meta name="theme-color" content="#000000" />
     <meta name="description" content="Web site created using create-react-app" />