chore: improve decide exception (#31)

decide/models/error.py

@@ -2,13 +2,13 @@
 
 
 class DecideException(Exception):
-
-    def __init__(self, *args: Any, **kwargs: Any) -> None:
-        extra = ""
-        if args:
-            extra = f"\n| extra info: {args[0]}"
-        print(f"[{self.__class__.__name__}]: {self.__doc__}{extra}")
-        Exception.__init__(self, *args)
+    def __init__(self, message, **kwargs):
+        self.message = message
+        self.additional_info = kwargs
+
+    def __str__(self):
+        _ = ', '.join(f"{key}={value}" for key, value in self.additional_info.items())
+        return f"{self.message}"
 
 
 class IllegalAssignmentException(DecideException):