Abstract level for bittensor/commands/module:class

[RomanCh-OT]

The current task will cover 2 goals:

1. Avoiding multiple code duplication
2. Maintaining strict class architectures for creating command classes.

AC:

• The classes of all modules of the command sub-package will be created based on one class
• Code duplication will disappear
• All commands must receive an instance of the subtensor as an argument to avoid creating it every time.