move steps abstract method into VbanCmd.

vban_cmd/factory.py

@@ -1,4 +1,3 @@
-import abc
 import logging
 from enum import IntEnum
 from functools import cached_property
@@ -122,11 +121,6 @@ class FactoryBase(VbanCmd):
             + f"({self.kind}, ip='{self.ip}', port={self.port}, streamname='{self.streamname}')"
         )
 
-    @property
-    @abc.abstractmethod
-    def steps(self):
-        pass
-
     @cached_property
     def configs(self):
         self._configs = configs(self.kind.name)

vban_cmd/vbancmd.py

@@ -56,9 +56,10 @@ class VbanCmd(abc.ABC):
         self.producer = None
         self._last_script_request_time = 0
 
+    @property
     @abc.abstractmethod
-    def __str__(self):
-        """Ensure subclasses override str magic method"""
+    def steps(self):
+        """Steps required to build the interface for this Voicemeeter kind"""
 
     def _conn_from_toml(self) -> dict:
         try: