chore: Update next.config.ts for consistent import syntax

ecosystem.config.js

@@ -0,0 +1,10 @@
+module.exports = {
+  apps: [
+    {
+      name: 'on-site-survey',
+      script: 'node_modules/next/dist/bin/next',
+      instances: 2,
+      exec_mode: 'cluster',
+    },
+  ],
+}

next.config.ts

@@ -1,7 +1,7 @@
-import type { NextConfig } from "next";
+import type { NextConfig } from 'next'
 
 const nextConfig: NextConfig = {
   /* config options here */
-};
+}
 
-export default nextConfig;
+export default nextConfig