Working on event related models and methods. Also, a lot of general clean up of everything.

app/models/order_cart_models.py

@@ -210,9 +210,9 @@ class Order_Cart_Base(BaseModel):
     created_on: Optional[datetime.datetime] = None
     updated_on: Optional[datetime.datetime] = None
 
+    # Including other related objects
     order_cart_line_li: List[Order_Cart_Line_Base] = []
-
-    cfg: Optional[Order_Cart_Cfg_Base] = Order_Cart_Cfg_Base()
+    cfg: Optional[Order_Cart_Cfg_Base] = Order_Cart_Cfg_Base() # Should this be renamed to order_cart_cfg?
 
     _processed_at: datetime.datetime = PrivateAttr(default_factory=datetime.datetime.now)