Add favicon

assets/templates/base.njk

@@ -12,6 +12,8 @@
 <script src="js/htmx.min.js"></script>
 <link rel="manifest" href="manifest.webmanifest">
 <meta name="theme-color" content="#1a202c">
+<link rel="icon" href="icons/favicon.ico" sizes="16x16 32x32 48x48">
+<link rel="icon" href="icons/favicon.svg" type="image/svg+xml">
 <link rel="apple-touch-icon" href="icons/apple-touch-icon.png">
 <meta name="mobile-web-app-capable" content="yes">
 <meta name="apple-mobile-web-app-capable" content="yes">