feat(aurora): starting work on the config rewrite

aurora/abc.py

@@ -0,0 +1,28 @@
+from abc import ABC
+
+from redbot.core import commands
+from redbot.core.bot import Red
+
+from .utilities.config import Config
+
+
+class CompositeMetaClass(type(commands.Cog), type(ABC)):
+    """
+    This allows the metaclass used for proper type detection to
+    coexist with discord.py's metaclass
+    """
+
+    pass
+
+
+class Mixin(ABC):
+    """
+    Base class for well behaved type hint detection with composite class.
+
+    Basically, to keep developers sane when not all attributes are defined in each mixin.
+    """
+
+    def __init__(self, *_args):
+        super().__init__()
+        self.config: Config
+        self.bot: Red