implementation of server synchronization

src/config/auto-sync-config.interface.ts

@@ -0,0 +1,12 @@
+import { RestRequestMethod } from '../app/core/data/request.models';
+
+/* enum indices  */
+type TimePerMethod = {
+  [method in RestRequestMethod]: number;
+};
+
+export interface AutoSyncConfig {
+  defaultTime: number;
+  timePerMethod: TimePerMethod;
+  maxBufferSize: number;
+};