- Updated the `OxiAPI` class to check for `None` explicitly when setting authentication credentials.
- Added type hints to the `Node` class and introduced a TODO for future enhancements.
- Refactored properties in the `NodeView` class to include type hints and improved handling of optional data retrieval.
- Implemented a new `reload` method to fetch the reload status from the API.
- The method raises an error for unsuccessful responses and returns the status code on success.
- Implemented a private `_updater` method to fetch the next node's status.
- Added `last_status` and `last_check` properties to retrieve the latest node status and check time.
- Introduced a `refresh` property to update the node status and handle errors appropriately.
