feat: use Mapped syntax for columns

src/models.py

@@ -1,3 +1,16 @@
 """
 Global database models
 """
+from datetime import datetime
+from typing import Any
+
+from sqlalchemy import DateTime, JSON
+from sqlalchemy.orm import DeclarativeBase
+
+
+class CustomBase(DeclarativeBase):
+	type_annotation_map = {
+		datetime: DateTime(timezone=True),
+		dict[str, Any]: JSON,
+	}
+