Implemented the interface in all responses

refr #132

src/models/responses/ResponseRunnerGroup.ts

@@ -1,11 +1,19 @@
 import { IsInt, IsNotEmpty, IsObject, IsOptional, IsString } from "class-validator";
 import { GroupContact } from '../entities/GroupContact';
 import { RunnerGroup } from '../entities/RunnerGroup';
+import { ResponseObjectType } from '../enums/ResponseObjectType';
+import { IResponse } from './IResponse';
 
 /**
  * Defines the runnerGroup response.
 */
-export abstract class ResponseRunnerGroup {
+export abstract class ResponseRunnerGroup implements IResponse {
+    /**
+    * The responseType.
+    * This contains the type of class/entity this response contains.
+    */
+    responseType: ResponseObjectType = ResponseObjectType.RUNNERGROUP;
+
     /**
      * The runnerGroup's id.
      */