feat: migrate from next.js to vite

frontend/vite.config.ts

@@ -0,0 +1,12 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    port: 3000,
+  },
+  build: {
+    outDir: 'dist',
+  },
+});