Improvements to Icons for the Website service (#21)

Reviewed-on: rock-n-code/loud-amsterdam#21
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>

Services/Website/Resources/Static/icon.svg

@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" xml:space="preserve" viewBox="0 0 192 192"><path fill="#e08524" d="M75.3 73.4H18.4l45.3 34.3L48.3 163l46.1-32.3 48.2 34.6-16.9-58.3 44.9-33.6H115l-20.5-55-19.2 55z"/><path d="m96.7 18.8 18.2 8.2 16.5 44.3h-15.1L96.7 18.8zm-47 146 18.7 9.9 42.6-29.9-16.5-11.4-44.8 31.4zm79.1-56.8 17.4 9.4 18.6 60.1-19.7-11.3-16.3-58.2z"/><path d="m173.1 74.3 17.8 9.2-44.7 34-17.4-9.4 44.3-33.8z"/></svg>
+<svg xmlns="http://www.w3.org/2000/svg" xml:space="preserve" viewBox="0 0 192 192"><style>.accent{fill:#000}@media (prefers-color-scheme:dark){.accent{fill:#f3ecf5}}</style><path fill="#e08524" d="M75.3 73.4H18.4l45.3 34.3L48.3 163l46.1-32.3 48.2 34.6-16.9-58.3 44.9-33.6H115l-20.5-55-19.2 55z"/><path class="accent" d="m96.7 18.8 18.2 8.2 16.5 44.3h-15.1L96.7 18.8zm-47 146 18.7 9.9 42.6-29.9-16.5-11.4-44.8 31.4zm79.1-56.8 17.4 9.4 18.6 60.1-19.7-11.3-16.3-58.2z"/><path class="accent" d="m173.1 74.3 17.8 9.2-44.7 34-17.4-9.4 44.3-33.8z"/></svg>

Services/Website/Resources/Static/site.webmanifest

@@ -2,9 +2,13 @@
   "short_name": "",
   "name": "",
   "icons": [{
-    "src": "icon.png",
+    "src": "icon-192.png",
     "type": "image/png",
     "sizes": "192x192"
+  }, {
+    "src": "icon-512.png",
+    "type": "image/png",
+    "sizes": "512x512"
   }],
   "start_url": "/?utm_source=homescreen",
   "background_color": "#fafafa",