refactor: add error util in project

src/utils/error.py

@@ -0,0 +1,23 @@
+
+from typing import Protocol
+
+
+class error(Protocol):
+    _error_code: int = 0
+    _error_info: str = ""
+
+    def __init__(self, error_code: int, error_info: str):
+        self._error_code = error_code
+        self._error_info = error_info
+    def __str__(self) -> str:
+        return f"{self.__class__.__name__}({self._error_code}, {self._error_info})"
+    
+    @property
+    def error_code(self) -> int:
+        return self._error_code
+    @property
+    def error_info(self) -> str:
+        return self._error_info
+    @property
+    def is_success(self) -> bool:
+        return self._error_code == 0