Add Farcaster manifest and meta tag

Author: alex-grover

public/.well-known/farcaster.json

@@ -0,0 +1,16 @@
+{
+  "accountAssociation": {
+    "header": "eyJmaWQiOjEwMjU5LCJ0eXBlIjoiY3VzdG9keSIsImtleSI6IjB4NzI1NkEwN0ZhODU5N2JDMUU2M2I3ZEFlMGNFYkIxMERhRDczNzBiQSJ9",
+    "payload": "eyJkb21haW4iOiJyZ2IuZnVuIn0",
+    "signature": "MHhjN2RjMTVjMmUyNzAzMzVhNjA1OTg2OWEzOGFiZWMzNGMwZWZjNjVlODY1ZDMxMDdjYzA3MTZiOTJhMjIyNzQ5MDM0MzVjZDEwOWFlZGM4ZDZhZTMyZTYyOGQ5NDFkOTJlNDg2YmU1OTk1YTQ4Mzc2ZDQxYzdjMTJhZWQ1ZTExNzFj"
+  },
+  "frame": {
+    "version": "1",
+    "name": "RGB",
+    "iconUrl": "https://rgb.fun/icon.svg",
+    "homeUrl": "https://rgb.fun",
+    "imageUrl": "https://rgb.fun/opengraph-image.png",
+    "buttonTitle": "Mint",
+    "splashBackgroundColor": "#ffffff"
+  }
+}

src/app/layout.tsx

@@ -11,6 +11,21 @@ import './global.css'
 export const metadata: Metadata = {
   title: 'RGB',
   description: '16,777,216 onchain rgb values',
+  other: {
+    'fc:frame': JSON.stringify({
+      version: 'next',
+      imageUrl: 'https://rgb.fun/opengraph-image.png',
+      button: {
+        title: 'Mint',
+        action: {
+          type: 'launch_frame',
+          name: 'RGB',
+          url: 'https://rgb.fun',
+          splashBackgroundColor: '#ffffff',
+        },
+      },
+    }),
+  },
 }
 
 export default function RootLayout({ children }: PropsWithChildren) {