chore(springwolf-ui): re-add smoke-test for complete app

Co-authored-by: Timon Back <timonback@users.noreply.github.com>

springwolf-ui/src/app/app.component.spec.ts

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+import {AppComponent} from "./app.component";
+import {render, screen} from "@testing-library/angular";
+import {appConfig} from "./app.config";
+
+
+describe("AppComponent", () => {
+  test("should render", async () => {
+    await render(AppComponent, {
+      providers: appConfig.providers
+    });
+
+    expect(screen.getByText("Springwolf"));
+  });
+});