* Create new BTMiner M6X backend class to represent Whatsminer new M6X generation
* Add all new known types of Whatsminer M6X
* Ensure all new types are imported in their respective __init__.py
* Create all BTMiner API class for known types of new M6X generation
* Ensure all new BTMiner API class are imported in __init__.py
* Fix erroneous M6X models data
* Ensure M6X miners are imported and add them to their MinerTypes dictionary in miner_factory.py