chore: Add lint warning on using default exports in the apps (except in app and pages folder) (supabase#37952)

Add lint warning on using default exports in the apps (except in app and pages folders).

Author: ivasilov

packages/eslint-config-supabase/next.js

@@ -3,5 +3,14 @@ module.exports = {
   rules: {
     '@next/next/no-html-link-for-pages': 'off',
     'react/jsx-key': 'off',
+    'no-restricted-exports': ['warn', { restrictDefaultExports: { direct: true } }],
   },
+  overrides: [
+    {
+      files: ['pages/**', 'app/**'],
+      rules: {
+        'no-restricted-exports': 'off',
+      },
+    },
+  ],
 }