Add api error response

todo/dto/responses/error_response.py

@@ -0,0 +1,21 @@
+from enum import Enum
+from typing import Dict, List
+from pydantic import BaseModel
+
+
+class ApiErrorSource(Enum):
+    PARAMETER = "parameter"
+    POINTER = "pointer"
+    HEADER = "header"
+
+
+class ApiErrorDetail(BaseModel):
+    source: Dict[ApiErrorSource, str] | None = None
+    title: str | None = None
+    detail: str | None = None
+
+
+class ApiErrorResponse(BaseModel):
+    statusCode: int
+    message: str
+    errors: List[ApiErrorDetail]