Shortened db call

ref #13

src/models/entities/RunnerOrganisation.ts

@@ -23,4 +23,7 @@ export class RunnerOrganisation extends RunnerGroup {
  */
   @OneToMany(() => RunnerTeam, team => team.parentGroup, { nullable: true })
   teams: RunnerTeam[];
+  public async getTeams() {
+    return await getConnectionManager().get().getRepository(RunnerTeam).find({ parentGroup: this });
+  }
 }