Implemented the interface in all responses

refr #132

src/models/responses/ResponseLogout.ts

@@ -1,9 +1,17 @@
 import { IsString } from 'class-validator';
+import { ResponseObjectType } from '../enums/ResponseObjectType';
+import { IResponse } from './IResponse';
 
 /**
  * Defines the logout response.
 */
-export class Logout {
+export class Logout implements IResponse {
+  /**
+   * The responseType.
+   * This contains the type of class/entity this response contains.
+   */
+  responseType: ResponseObjectType = ResponseObjectType.LOGOUT;
+
   /**
   * The logout's timestamp.
   */