feat: add mushroom emoji favicon for MycoFi

Use inline SVG for a fitting decentralized symbol.

#VERCEL_SKIP

Co-authored-by: Jeff Emmett <46964190+Jeff-Emmett@users.noreply.github.com>

app/layout.tsx

@@ -15,19 +15,9 @@ export const metadata: Metadata = {
   icons: {
     icon: [
       {
-        url: "/icon-light-32x32.png",
-        media: "(prefers-color-scheme: light)",
-      },
-      {
-        url: "/icon-dark-32x32.png",
-        media: "(prefers-color-scheme: dark)",
-      },
-      {
-        url: "/icon.svg",
-        type: "image/svg+xml",
+        url: 'data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text y=".9em" fontSize="90">🍄</text></svg>',
       },
     ],
-    apple: "/apple-icon.png",
   },
 }