- Added a `shutdown` boolean attribute to the `Interfaces` class to manage interface states.
- Updated the `eltex.ttp` template to include the `shutdown` command based on the new attribute.
- Modified expected configuration JSON files for various devices to reflect the new `shutdown` attribute, ensuring accurate testing and validation of interface configurations.
- Introduced a new JSON file `config.expected.json` containing expected system and interface configurations for Mikrotik devices, including model, serial number, IP addresses, and VLAN details.
- This addition facilitates testing and validation of the parsing functionality for Mikrotik configurations.