new & fix

- new: switch of sftp `rm -rf` dir
- fix: sftp upload
- fix: sftp uploading progress
- opt.: editor will save content if is editing file

lib/view/page/setting/entry.dart

@@ -191,6 +191,7 @@ class _SettingPageState extends State<SettingPage> {
         _buildSSHVirtualKeyAutoOff(),
         _buildKeyboardType(),
         _buildSSHVirtKeys(),
+        _buildSftpRmrfDir(),
       ].map((e) => RoundRectCard(e)).toList(),
     );
   }
@@ -1022,4 +1023,11 @@ class _SettingPageState extends State<SettingPage> {
       ],
     );
   }
+
+  Widget _buildSftpRmrfDir() {
+    return ListTile(
+      title: Text(_s.sftpRmrfDir),
+      trailing: buildSwitch(context, _setting.sftpRmrfDir),
+    );
+  }
 }