relocate special roles to api request

backend/src/models/requests/imageroute.dto.ts

@@ -0,0 +1,10 @@
+import { Type } from 'class-transformer';
+import { IsDefined, ValidateNested } from 'class-validator';
+import { MultiPartFileDto } from './multipart.dto';
+
+export class ImageUploadDto {
+  @IsDefined()
+  @ValidateNested()
+  @Type(() => MultiPartFileDto)
+  image: MultiPartFileDto;
+}