StrategyABC should not provide default value for _name

[rgildein]

I believe that the StrategyABC should no provide default value for _name. At the same time the property name return type is not HWTool (Enum), but string.

Suggestion to fix:

class StrategyABC(ABC):  # pylint: disable=R0903
    """Basic strategy."""

    _name: str

    @property
    def name(self) -> str:
        """Name."""
        return self._name