Added a contact response class

ref #104

src/models/entities/GroupContact.ts

@@ -9,6 +9,7 @@ import {
 } from "class-validator";
 import { Column, Entity, ManyToOne, OneToMany, PrimaryGeneratedColumn } from "typeorm";
 import { config } from '../../config';
+import { ResponseGroupContact } from '../responses/ResponseGroupContact';
 import { Address } from "./Address";
 import { IAddressUser } from './IAddressUser';
 import { RunnerGroup } from "./RunnerGroup";
@@ -85,7 +86,7 @@ export class GroupContact implements IAddressUser {
   /**
    * Turns this entity into it's response class.
    */
-  public toResponse() {
-    return new Error("NotImplemented");
+  public toResponse(): ResponseGroupContact {
+    return new ResponseGroupContact(this);
   }
 }