feat: user sync stream (#16862)

* refactor: user entity

* chore: rebase fixes

* refactor: remove int user Id

* refactor: migrate store userId from int to string

* refactor: rename uid to id

* feat: drift

* pr feedback

* refactor: move common overrides to mixin

* refactor: remove int user Id

* refactor: migrate store userId from int to string

* refactor: rename uid to id

* feat: user & partner sync stream

* pr changes

* refactor: sync service and add tests

* chore: remove generated change

* chore: move sync model

* rebase: convert string ids to byte uuids

* rebase

* add processing logs

* batch db calls

* rewrite isolate manager

* rewrite with worker_manager

* misc fixes

* add sync order test

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/lib/domain/utils/background_sync.dart

@@ -0,0 +1,37 @@
+// ignore_for_file: avoid-passing-async-when-sync-expected
+
+import 'dart:async';
+
+import 'package:immich_mobile/providers/infrastructure/sync_stream.provider.dart';
+import 'package:immich_mobile/utils/isolate.dart';
+import 'package:worker_manager/worker_manager.dart';
+
+class BackgroundSyncManager {
+  Cancelable<void>? _userSyncTask;
+
+  BackgroundSyncManager();
+
+  Future<void> cancel() {
+    final futures = <Future>[];
+    if (_userSyncTask != null) {
+      futures.add(_userSyncTask!.future);
+    }
+    _userSyncTask?.cancel();
+    _userSyncTask = null;
+    return Future.wait(futures);
+  }
+
+  Future<void> syncUsers() {
+    if (_userSyncTask != null) {
+      return _userSyncTask!.future;
+    }
+
+    _userSyncTask = runInIsolateGentle(
+      computation: (ref) => ref.read(syncStreamServiceProvider).syncUsers(),
+    );
+    _userSyncTask!.whenComplete(() {
+      _userSyncTask = null;
+    });
+    return _userSyncTask!.future;
+  }
+}