feat: complete tree view (#93)

* feat: complete tree view

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Co-authored-by: wuke2022 <[email protected]>

ui/flutter/lib/app/modules/create/controllers/create_controller.dart

@@ -1,6 +1,8 @@
 import 'package:get/get.dart';
 
 class CreateController extends GetxController {
-  final files = [].obs;
+  // final files = [].obs;
+  final RxList fileInfos = [].obs;
   final RxList selectedIndexes = [].obs;
+  final RxList openedFolders = [].obs;
 }