chore: fix import for inquirer

Author: wing328

apps/generator-cli/src/app/services/ui.service.ts

@@ -1,6 +1,7 @@
 // import ora from 'ora'
 import {Injectable} from '@nestjs/common';
-import {prompt, Separator} from 'inquirer';
+import prompt from 'inquirer';
+import Separator from 'inquirer/lib/objects/separator';
 import {getTable} from 'console.table'
 
 @Injectable()