add company code to organization serialzier & handle quota weight exception

apps/product/exceptions.py

@@ -0,0 +1,10 @@
+from rest_framework.exceptions import APIException
+from rest_framework import status
+
+
+class QuotaWeightException(APIException):
+    """ if quota distributions weight is more """
+
+    status_code = status.HTTP_401_UNAUTHORIZED
+    default_detail = ''
+    default_code = 'unauthorized'