feat: bootstrap lunch picker miniapp with backend, docs, and branding assets

starter-granite.config.ts

@@ -0,0 +1,22 @@
+import { appsInToss } from '@apps-in-toss/framework/plugins';
+import { defineConfig } from '@granite-js/react-native/config';
+
+export default defineConfig({
+  appName: 'my-app',
+  scheme: 'intoss',
+  plugins: [
+    appsInToss({
+      target: '0.84.0',
+      brand: {
+        displayName: '내 앱 이름',
+        primaryColor: '#0064FF',
+        icon: 'https://static.toss.im/appsintoss/your-icon.png',
+      },
+      navigationBar: {
+        withBackButton: true,
+        withHomeButton: true,
+      },
+      permissions: [],
+    }),
+  ],
+});