Implemented the first route of the toResponse normalisationf for all classes

ref #67

src/models/entities/RunnerTeam.ts

@@ -1,5 +1,6 @@
 import { IsNotEmpty } from "class-validator";
 import { ChildEntity, ManyToOne } from "typeorm";
+import { ResponseRunnerTeam } from '../responses/ResponseRunnerTeam';
 import { RunnerGroup } from "./RunnerGroup";
 import { RunnerOrganisation } from "./RunnerOrganisation";
 
@@ -17,4 +18,11 @@ export class RunnerTeam extends RunnerGroup {
   @IsNotEmpty()
   @ManyToOne(() => RunnerOrganisation, org => org.teams, { nullable: true })
   parentGroup?: RunnerOrganisation;
+
+  /**
+   * Turns this entity into it's response class.
+   */
+  public toResponse(): ResponseRunnerTeam {
+    return new ResponseRunnerTeam(this);
+  }
 }