added favicon

Resources/public/admin/images/favicon/browserconfig.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig>
+    <msapplication>
+        <tile>
+            <square150x150logo src="/bundles/netgentags/admin/images/favicon/mstile-150x150.png"/>
+            <TileColor>#da532c</TileColor>
+        </tile>
+    </msapplication>
+</browserconfig>

Resources/public/admin/images/favicon/manifest.json

@@ -0,0 +1,18 @@
+{
+    "name": "",
+    "icons": [
+        {
+            "src": "/bundles/netgentags/admin/images/favicon/android-chrome-192x192.png",
+            "sizes": "192x192",
+            "type": "image/png"
+        },
+        {
+            "src": "/bundles/netgentags/admin/images/favicon/android-chrome-512x512.png",
+            "sizes": "512x512",
+            "type": "image/png"
+        }
+    ],
+    "theme_color": "#ffffff",
+    "background_color": "#ffffff",
+    "display": "standalone"
+}

Resources/views/admin/pagelayout.html.twig

@@ -8,6 +8,15 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
     <meta name="theme-color" content="#02a6f2">
 
+    <link rel="apple-touch-icon" sizes="180x180" href="{{ asset('bundles/netgentags/admin/images/favicon/apple-touch-icon.png') }}">
+    <link rel="icon" type="image/png" href="{{ asset('bundles/netgentags/admin/images/favicon/favicon-32x32.png') }}" sizes="32x32">
+    <link rel="icon" type="image/png" href="{{ asset('bundles/netgentags/admin/images/favicon/favicon-16x16.png') }}" sizes="16x16">
+    <link rel="manifest" href="{{ asset('bundles/netgentags/admin/images/favicon/manifest.json') }}">
+    <link rel="mask-icon" href="{{ asset('bundles/netgentags/admin/images/favicon/safari-pinned-tab.svg') }}" color="#7ac143">
+    <link rel="shortcut icon" href="{{ asset('bundles/netgentags/admin/images/favicon/favicon.ico') }}">
+    <meta name="msapplication-config" content="{{ asset('bundles/netgentags/admin/images/favicon/browserconfig.xml') }}">
+    <meta name="theme-color" content="#ffffff">
+
     <title>
         {% block title %}
             {{ 'pagelayout.title'|trans }}