Added a favicon

Downloaded from https://www.svgrepo.com/svg/261470/notepad-notebook and
generated using https://realfavicongenerator.net.

Author: revolter

_includes/custom-head.html

@@ -0,0 +1,10 @@
+{% assign favicon_version = 1 %}
+<link rel="apple-touch-icon" sizes="180x180" href="{% link /assets/favicon/apple-touch-icon.png %}?v={{ favicon_version }}">
+<link rel="icon" type="image/png" sizes="32x32" href="{% link /assets/favicon/favicon-32x32.png %}?v={{ favicon_version }}">
+<link rel="icon" type="image/png" sizes="16x16" href="{% link /assets/favicon/favicon-16x16.png %}?v={{ favicon_version }}">
+<link rel="manifest" href="{% link assets/favicon/site.webmanifest %}?v={{ favicon_version }}">
+<link rel="mask-icon" href="{% link /assets/favicon/safari-pinned-tab.svg %}?v={{ favicon_version }}" color="#c6a000">
+<link rel="shortcut icon" href="{% link /assets/favicon/favicon.ico %}?v={{ favicon_version }}">
+<meta name="msapplication-TileColor" content="#da532c">
+<meta name="msapplication-config" content="{% link assets/favicon/browserconfig.xml %}?v={{ favicon_version }}">
+<meta name="theme-color" content="#ffffff">

assets/favicon/android-chrome-192x192.png

@@ -0,0 +1,14 @@
+---
+---
+
+{% assign favicon_version = 1 %}
+
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig>
+    <msapplication>
+        <tile>
+            <square150x150logo src="{% link /assets/favicon/mstile-150x150.png %}?v={{ favicon_version }}"/>
+            <TileColor>#da532c</TileColor>
+        </tile>
+    </msapplication>
+</browserconfig>

assets/favicon/android-chrome-512x512.png

@@ -0,0 +1,24 @@
+---
+---
+
+{% assign favicon_version = 1 %}
+
+{
+    "name": "{{ site.title }}",
+    "short_name": "{{ site.title }}",
+    "icons": [
+        {
+            "src": "{% link /assets/favicon/android-chrome-192x192.png %}?v={{ favicon_version }}",
+            "sizes": "192x192",
+            "type": "image/png"
+        },
+        {
+            "src": "{% link /assets/favicon/android-chrome-512x512.png %}?v={{ favicon_version }}",
+            "sizes": "512x512",
+            "type": "image/png"
+        }
+    ],
+    "theme_color": "#ffffff",
+    "background_color": "#ffffff",
+    "display": "standalone"
+}