Add Google site verification meta tag

Added Google site verification meta tag for SEO.

Author: adarshdigievo

src/_includes/base.njk

@@ -22,6 +22,9 @@
   <meta name="twitter:title" content="{{ title or site.name + ' — ' + site.fullName }}">
   <meta name="twitter:description" content="{{ description or site.description }}">
   <meta name="twitter:image" content="{{ site.url }}/images/tripy-og-img.png">
+  
+  <!-- Google search console -->
+  <meta name="google-site-verification" content="UKL5MJi4MiCjH8PvvStdp7-Am3M3KixtCLKDTkHh5Tw" />
 
   <!-- Fonts -->
   <link rel="preconnect" href="https://fonts.googleapis.com">