refactor: apply new eslint rules

src/app/app.module.ts

@@ -12,7 +12,12 @@
  * You should have received a copy of the GNU General Public License along with
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
-import {CommonModule, LocationStrategy, PathLocationStrategy, registerLocaleData} from '@angular/common';
+import {
+  CommonModule,
+  LocationStrategy,
+  PathLocationStrategy,
+  registerLocaleData,
+} from '@angular/common';
 import {HttpClient} from '@angular/common/http';
 import localeDe from '@angular/common/locales/de';
 import {APP_INITIALIZER, NgModule, Provider} from '@angular/core';