move ApiResponseError to separate file

src/loaders/ApiBasedShuttleRepositoryLoader.ts

@@ -2,13 +2,7 @@ import { ShuttleGetterSetterRepository } from "../repositories/ShuttleGetterSett
 import { IEta, IRoute, IShuttle, IStop } from "../entities/ShuttleRepositoryEntities";
 import { ShuttleRepositoryLoader } from "./ShuttleRepositoryLoader";
 import { IEntityWithId } from "../entities/SharedEntities";
-
-export class ApiResponseError extends Error {
-  constructor(message: string) {
-    super(message);
-    this.name = "ApiResponseError";
-  }
-}
+import { ApiResponseError } from "./ApiResponseError";
 
 /**
  * Class which can load data into a repository from the

src/loaders/ApiResponseError.ts

@@ -0,0 +1,6 @@
+export class ApiResponseError extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = "ApiResponseError";
+  }
+}