- Replaced the internal `_expand_vlan_range` function in the `Qtech` class with the new `expand_vlan_range` utility from `utils.py` for improved code maintainability.
- Added new configuration files `config_1.conf` and `config_2.conf` for Qtech devices to facilitate testing.
- Introduced expected output JSON files `config_1.expected.json` and `config_2.expected.json` to validate the parsing of Qtech configurations against expected results.
- Introduced a new configuration file `config.conf` for Huawei devices, detailing interface settings and VLAN configurations.
- Added an expected output JSON file `config.expected.json` to validate the parsing of Huawei configurations against expected results, including system model, serial number, and interface details.
- Replaced the internal `_expand_vlan_range` function in the `Eltex` class with the new `expand_vlan_range` utility from `utils.py` for improved code maintainability.
- Added a new configuration file `config.conf` for Eltex devices to facilitate testing.
- Introduced an expected output JSON file `config.expected.json` to validate the parsing of Eltex configurations against expected results.
- Removed the internal `_decode_utf` method from the `Keenetic` class and replaced its usage with the new `decode_utf` utility function for decoding interface descriptions.
- Added a new configuration file `config.conf` for Keenetic devices to facilitate testing.
- Introduced an expected output JSON file `config.expected.json` to validate the parsing of Keenetic configurations against expected results.
