Added a favicon

index.html

@@ -7,6 +7,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <script src="index.js"></script>
     <link rel="stylesheet" href="style.css">
+    <link rel="shortcut icon" href="assets/favicon.jpg" type="image/x-icon">
     <title>WebTerm</title>
     <!-- Xterm -->
     <link rel="stylesheet" href="xterm/xterm.css" />