Add Font Awesome

Author: insolor

_includes/head.html

@@ -5,6 +5,7 @@
     <link rel="stylesheet" type="text/css" media="screen" href="{{ '/assets/css/style.css?v=' | append: site.github.build_revision | relative_url }}">
     <link rel="shortcut icon" href="{{ site.baseurl }}/public/favicon.png">
     <link rel="apple-touch-icon-precomposed" sizes="144x144" href="{{ site.baseurl }}/public/apple-touch-icon-144-precomposed.png">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
     {% seo %}
     {% include yandex-verification.html %}
     {% include google-site-verification.html %}