Add initial favicon to the web interface

static/manifest.json

@@ -0,0 +1,41 @@
+{
+  "name": "App",
+  "icons": [
+    {
+      "src": "/images/android-icon-36x36.png",
+      "sizes": "36x36",
+      "type": "image/png",
+      "density": "0.75"
+    },
+    {
+      "src": "/images/android-icon-48x48.png",
+      "sizes": "48x48",
+      "type": "image/png",
+      "density": "1.0"
+    },
+    {
+      "src": "/images/android-icon-72x72.png",
+      "sizes": "72x72",
+      "type": "image/png",
+      "density": "1.5"
+    },
+    {
+      "src": "/images/android-icon-96x96.png",
+      "sizes": "96x96",
+      "type": "image/png",
+      "density": "2.0"
+    },
+    {
+      "src": "/images/android-icon-144x144.png",
+      "sizes": "144x144",
+      "type": "image/png",
+      "density": "3.0"
+    },
+    {
+      "src": "/images/android-icon-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "density": "4.0"
+    }
+  ]
+}

templates/index.html

@@ -21,6 +21,21 @@
       Dissect Pattern Tester and Matcher for Filebeat, Elasticsearch and
       Logstash
     </title>
+    <link rel="apple-touch-icon" sizes="57x57" href="/static/images/apple-icon-57x57.png">
+    <link rel="apple-touch-icon" sizes="60x60" href="/static/images/apple-icon-60x60.png">
+    <link rel="apple-touch-icon" sizes="72x72" href="/static/images/apple-icon-72x72.png">
+    <link rel="apple-touch-icon" sizes="76x76" href="/static/images/apple-icon-76x76.png">
+    <link rel="apple-touch-icon" sizes="114x114" href="/static/images/apple-icon-114x114.png">
+    <link rel="apple-touch-icon" sizes="120x120" href="/static/images/apple-icon-120x120.png">
+    <link rel="apple-touch-icon" sizes="144x144" href="/static/images/apple-icon-144x144.png">
+    <link rel="apple-touch-icon" sizes="152x152" href="/static/images/apple-icon-152x152.png">
+    <link rel="apple-touch-icon" sizes="180x180" href="/static/images/apple-icon-180x180.png">
+    <link rel="icon" type="image/png" sizes="192x192"  href="/static/images/android-icon-192x192.png">
+    <link rel="icon" type="image/png" sizes="32x32" href="/static/images/favicon-32x32.png">
+    <link rel="icon" type="image/png" sizes="96x96" href="/static/images/favicon-96x96.png">
+    <link rel="icon" type="image/png" sizes="16x16" href="/static/images/favicon-16x16.png">
+    <link rel="manifest" href="/static/manifest.json">
+    <meta name="theme-color" content="#ffffff">
     <link href="/static/dist/tailwind.css" rel="stylesheet" />
     <script src="/static/js/main.js"></script>
   </head>