feat: show stacks in asset viewer (#19935)

* feat: show stacks in asset viewer

* fix: global key issue and flash on stack asset change

* feat(mobile): stack and unstack action (#19941)

* feat(mobile): stack and unstack action

* add custom model

* use stackId from ActionSource

* Update mobile/lib/providers/infrastructure/action.provider.dart

Co-authored-by: shenlong <139912620+shenlong-tanwen@users.noreply.github.com>

---------

Co-authored-by: shenlong <139912620+shenlong-tanwen@users.noreply.github.com>

* fix: lint

* fix: bad merge

* fix: test

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>
Co-authored-by: Daimolean <92239625+wuzihao051119@users.noreply.github.com>
Co-authored-by: wuzihao051119 <wuzihao051119@outlook.com>

mobile/lib/domain/models/timeline.model.dart

@@ -1,3 +1,5 @@
+import 'package:immich_mobile/domain/utils/event_stream.dart';
+
 enum GroupAssetsBy {
   day,
   month,
@@ -38,3 +40,7 @@ class TimeBucket extends Bucket {
   @override
   int get hashCode => super.hashCode ^ date.hashCode;
 }
+
+class TimelineReloadEvent extends Event {
+  const TimelineReloadEvent();
+}