rewrite: Update data ORM.

Fix parsing bug in Update Query.
Fix parsing bug in Insert Query.

Add mapping interface to Model.
Implement OrderMixin, with ORDER and NULLS Enums.
Add `result` field to Query.

bot/data/__init__.py

@@ -6,3 +6,4 @@ from .base import Expression, RawExpr
 from .columns import ColumnExpr, Column, Integer, String
 from .registry import Registry, AttachableClass, Attachable
 from .adapted import RegisterEnum
+from .queries import ORDER, NULLS