- Removed unnecessary dependencies and improved code structure in `webdav` module.
- Updated VFS configuration to use global VFS instance for WebDAV app.
- Renamed example VFS file to reflect WebDAV functionality.
- Removed redundant code and simplified app initialization.
- Used the vfs interface to interact with files and dirs.
- Replaced the old webdav server example with a CLI application.
- Added command-line flags for port, directory, username, and password.
- Improved usability and configurability of the webdav server.
