message: fix(exchange): type bundleItemDTO before validation
diff: import { IsInt, IsPositive, ValidateNested, ArrayMinSize } from 'class-validator';
  +import { Type } from 'class-transformer';
  import { BundleItemDTO } from './bundle-item.dto';
  export class CreateBundleDTO {
  @@ -8,6 +9,7 @@ export class CreateBundleDTO {
  price: number;
  @ValidateNested()
  + @Type(() => BundleItemDTO)
  @ArrayMinSize(2)
  items: BundleItemDTO[];
  }
  