Some refactoring

projects/common/src/fm/services/item.service.ts

@@ -7,7 +7,9 @@ import { IItemTask } from '../models/itemTask';
 import { HttpClient, HttpParams } from "@angular/common/http";
 import { AppConfig } from "../shared/app.config";
 
-@Injectable()
+@Injectable({
+  providedIn: 'root',
+})
 export class ItemService {
   constructor(public httpClient: HttpClient, public appConfig: AppConfig) {
   }