Add Open Graph meta tags to index.html

Added Open Graph meta tags for better sharing.

Author: jo-chemla

index.html

@@ -9,6 +9,10 @@
     <link rel="stylesheet" href="https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-geocoder/v4.7.2/mapbox-gl-geocoder.css" type="text/css" />
     <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap" />
     <script defer src="https://cloud.umami.is/script.js" data-website-id="6876d360-1b54-4e97-ba59-de6db510257c"></script>
+    <meta name="og:title" property="og:title" content="Search EO Imagery" />
+    <meta name="og:description" property="og:description" content="Aggregator of Archive Satellite Imagery for searching platforms like Up42, SkyFi, EOS, Skywatch etc" />
+    <meta name="og:image" property="og:image" content="https://github.com/Iconem/search-satellite-imagery/blob/main/screenshot.jpg?raw=true" /> 
+    <meta property="og:url" content="https://search-eo-imagery.iconem.com/" />   
     <style>
       body {
         margin: 0;