Add swagger integration

src/parkio/parkio.controller.ts

@@ -1,6 +1,8 @@
 import { Controller, Get, Param } from '@nestjs/common';
 import { ParkioService } from './parkio.service';
+import { ApiTags } from '@nestjs/swagger';
 
+@ApiTags('parkio')
 @Controller('parkio')
 export class ParkioController {
     constructor(