✨ Renders file folders in drive

lib/models/file_list_item.dart

@@ -0,0 +1,10 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:island/models/file.dart';
+
+part 'file_list_item.freezed.dart';
+
+@freezed
+sealed class FileListItem with _$FileListItem {
+  const factory FileListItem.file(SnCloudFileIndex fileIndex) = FileItem;
+  const factory FileListItem.folder(String name) = FolderItem;
+}