convert example & homeassistant specific configs to a generic with all optional fields

cookbook/connectors/connector.py

@@ -1,9 +1,13 @@
 from abc import ABC, abstractmethod
 
-from cookbook.models import ShoppingListEntry, Space
+from cookbook.models import ShoppingListEntry, Space, ConnectorConfig
 
 
 class Connector(ABC):
+    @abstractmethod
+    def __init__(self, config: ConnectorConfig):
+        pass
+
     @abstractmethod
     async def on_shopping_list_entry_created(self, space: Space, instance: ShoppingListEntry) -> None:
         pass
@@ -20,5 +24,4 @@ class Connector(ABC):
     async def close(self) -> None:
         pass
 
-    # TODO: Maybe add an 'IsEnabled(self) -> Bool' to here
     # TODO: Add Recipes & possibly Meal Place listeners/hooks (And maybe more?)