Added OpenGraph and Twitter meta tags for better link previews

Author: Harshal-Taori-11

public/index.html

@@ -12,6 +12,27 @@
     <script>
       window.global = window;
     </script>
+
+    <!-- Open graph meta tags -->
+
+    <meta property="og:title" content="Element Call" />
+    <meta
+      property="og:description"
+      content="You're invited to join a call on Element Call"
+    />
+    <meta property="og:type" content="website" />
+    <meta property="og:url" content="https://call.element.io" />
+    <meta property="og:image" content="favicon.png" />
+
+    <meta name="twitter:card" content="summary_large_image" />
+    <meta property="twitter:domain" content="call.element.io" />
+    <meta property="twitter:url" content="https://call.element.io" />
+    <meta name="twitter:title" content="Element Call" />
+    <meta
+      name="twitter:description"
+      content="You're invited to join a call on Element Call"
+    />
+    <meta name="twitter:image" content="favicon.png" />
   </head>
 
   <!-- The default class is: .no-theme {display: none}. It will be overwritten once the app is loaded. -->