work on Response model

src/argenta/response/__init__.py

@@ -0,0 +1,5 @@
+from argenta.response.entity import Response
+from argenta.response.status import Status
+
+
+__all__ = ['Response', 'Status']

src/argenta/response/entity.py

@@ -3,10 +3,10 @@ from argenta.response.status import Status
 
 
 class Response:
-    def __init__(self, status: Status,
-                 valid_flags: ValidInputFlags = None,
-                 undefined_flags: UndefinedInputFlags = None,
-                 invalid_value_flags: InvalidValueInputFlags = None):
+    def __init__(self, status: Status = None,
+                 valid_flags: ValidInputFlags = ValidInputFlags(),
+                 undefined_flags: UndefinedInputFlags = UndefinedInputFlags(),
+                 invalid_value_flags: InvalidValueInputFlags = InvalidValueInputFlags()):
         self.status = status
         self.valid_flags = valid_flags
         self.undefined_flags = undefined_flags