Added basic response calss for runner cards

ref #77

src/models/entities/RunnerCard.ts

@@ -7,6 +7,7 @@ import {
   IsString
 } from "class-validator";
 import { Column, Entity, ManyToOne, OneToMany, PrimaryGeneratedColumn } from "typeorm";
+import { ResponseRunnerCard } from '../responses/ResponseRunnerCard';
 import { Runner } from "./Runner";
 import { TrackScan } from "./TrackScan";
 
@@ -62,6 +63,6 @@ export class RunnerCard {
    * Turns this entity into it's response class.
    */
   public toResponse() {
-    return new Error("NotImplemented");
+    return new ResponseRunnerCard(this);
   }
 }