feat(neon_files): sort folders first in FilesBrowserView

Signed-off-by: Nikolas Rimikis <rimikis.nikolas@gmail.com>

packages/neon/neon_files/lib/sort/files.dart

@@ -5,6 +5,7 @@ final filesSortBox = SortBox<FilesSortProperty, WebDavFile>(
     FilesSortProperty.name: (final file) => file.name.toLowerCase(),
     FilesSortProperty.modifiedDate: (final file) => file.lastModified?.millisecondsSinceEpoch ?? 0,
     FilesSortProperty.size: (final file) => file.size ?? 0,
+    FilesSortProperty.isFolder: (final file) => file.isDirectory ? 0 : 1,
   },
   {
     FilesSortProperty.modifiedDate: {

packages/neon/neon_files/lib/widgets/browser_view.dart

@@ -62,6 +62,9 @@ class _FilesBrowserViewState extends State<FilesBrowserView> {
                       sortBox: filesSortBox,
                       sortPropertyOption: widget.bloc.options.filesSortPropertyOption,
                       sortBoxOrderOption: widget.bloc.options.filesSortBoxOrderOption,
+                      presort: const {
+                        (FilesSortProperty.isFolder, SortBoxOrder.ascending),
+                      },
                       input: files.data,
                       builder: (final context, final sorted) => NeonListView<Widget>(
                         scrollKey: 'files-${pathSnapshot.requireData.join('/')}',