changed cmdset_default -> cmdset_character and changed the class names to match. Added migrations to properly update default-set cmdset_stores to the new positions (objects created from custom types are not migrated, these should see errors and need to re-point their imports to the new defaults)

src/commands/default/muxcommand.py

@@ -7,7 +7,7 @@ from src.utils import utils
 from src.commands.command import Command
 
 # limit symbol import for API
-__all__ = ("MuxCommand",)
+__all__ = ("MuxCommand", "MuxPlayerCommand")
 
 class MuxCommand(Command):
     """