Update the favicon

I took the SVG favicon from the brand assets pack Creative Coop
produced and put it through an online tool[1] to
generate these files.

[1] https://realfavicongenerator.net

_includes/head.html

@@ -55,9 +55,10 @@
   <link rel="canonical" href="{{ page.url | absolute_url }}" />
   <link rel='stylesheet' href='/assets/css/reset.css' type='text/css' media='all' />
   <link rel='stylesheet' id='app-css' href='/assets/css/app.css' type='text/css' media='all' />
-  <link rel="icon" href="/assets/img/cropped-cotech_512x512-32x32.png" sizes="32x32" />
-  <link rel="icon" href="/assets/img/cropped-cotech_512x512-192x192.png" sizes="192x192" />
-  <link rel="apple-touch-icon-precomposed" href="/assets/img/cropped-cotech_512x512-180x180.png" />
-  <meta name="msapplication-TileImage" content="/assets/img/cropped-cotech_512x512-270x270.png" />
-  <link rel="icon" type="image/x-icon" href="/assets/img/CoTech-logo.png">
+  <link rel="icon" type="image/png" href="/assets/img/favicon-96x96.png" sizes="96x96" />
+  <link rel="icon" type="image/svg+xml" href="/assets/img/favicon.svg" />
+  <link rel="shortcut icon" href="/assets/img/favicon.ico" />
+  <link rel="apple-touch-icon" sizes="180x180" href="/assets/img/apple-touch-icon.png" />
+  <meta name="apple-mobile-web-app-title" content="CoTech" />
+  <link rel="manifest" href="/assets/img/site.webmanifest" />
 </head>

assets/img/favicon.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" width="32" height="32"><svg id="SvgjsSvg1008" data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
+  <defs>
+    <style>
+      .cls-1 {
+        fill: #fff;
+      }
+    </style>
+  </defs>
+  <circle cx="16" cy="16" r="16"></circle>
+  <path class="cls-1" d="M12.0204185,23.7686407h7.959163c1.0874172,0,1.9689431-.8815258,1.9689431-1.9689431v-2.8400001c0-.6934938-.5621878-1.2556816-1.2556816-1.2556816h-.2670344c-.6934938,0-1.2556816.5621878-1.2556816,1.2556816v.0843354c0,1.0748623-.871348,1.9462103-1.9462103,1.9462103h-1.7687865c-1.4498897,0-2.6252575-1.1753678-2.6252575-2.6252575v-4.7299716c0-1.4498897,1.1753678-2.6252575,2.6252575-2.6252575h1.7687865c1.0748623,0,1.9462103.871348,1.9462103,1.9462103v.0497706c0,.6934938.5621878,1.2556816,1.2556816,1.2556816h.2670344c.6934938,0,1.2556816-.5621878,1.2556816-1.2556816v-2.8054353c0-1.0874172-.8815258-1.9689431-1.9689431-1.9689431h-7.959163c-1.0874172,0-1.9689431.8815258-1.9689431,1.9689431v11.5993953c0,1.0874172.8815258,1.9689431,1.9689431,1.9689431Z"></path>
+</svg><style>@media (prefers-color-scheme: light) { :root { filter: none; } }
+@media (prefers-color-scheme: dark) { :root { filter: none; } }
+</style></svg>

assets/img/site.webmanifest

@@ -0,0 +1,21 @@
+{
+  "name": "CoTech",
+  "short_name": "CoTech",
+  "icons": [
+    {
+      "src": "/web-app-manifest-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "maskable"
+    },
+    {
+      "src": "/web-app-manifest-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "maskable"
+    }
+  ],
+  "theme_color": "#ffffff",
+  "background_color": "#ffffff",
+  "display": "standalone"
+}