Add Google site verification meta tag

Added Google site verification meta tag for SEO.

Author: DevuboxLinux

index.html

@@ -11,6 +11,7 @@
     <meta name="keywords" content="Linux, Devubox-MX, Devuan, Debian, Openbox, Operating System, Indonesia, Desktop OS">
     <meta name="author" content="Devubox-MX Team">
     <meta name="robots" content="index, follow">
+    <meta name="google-site-verification" content="5NSUj4iUm8mQVvVLfs-nzIvBGkmw6tJR6EQUsfkQQM0" />
     <link rel="canonical" href="https://devuboxlinux.github.io/">
     <link rel='shortlink' href="https://devuboxlinux.github.io/"/>
     <!-- Open Graph / Facebook Meta Tags -->