feat: migrate frontend to Next.js

frontend/package.json

@@ -2,9 +2,10 @@
   "name": "podcast-frontend",
   "version": "1.0.0",
   "scripts": {
-    "dev": "bun dev",
-    "build": "bun build",
-    "start": "bun start"
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "next lint"
   },
   "dependencies": {
     "react": "^18.0.0",
@@ -17,7 +18,6 @@
     "bun-types": "^0.1.0",
     "@types/bun": "latest"
   },
-  "module": "src/index.tsx",
   "type": "module",
   "private": true
 }