add some new data to device login data, first part of broker to stake holders assignment

apps/core/mixins/soft_delete_mixin.py

@@ -0,0 +1,14 @@
+from rest_framework import status
+from rest_framework.response import Response
+
+
+class SoftDeleteMixin:
+    def destroy(self, request, *args, **kwargs):
+        """ override destroy -> soft delete """
+
+        instance = self.get_object()  # noqa
+        instance.soft_delete()
+        return Response(
+            {"detail": "رکورد با موفقیت حذف شد (Soft Delete)."},
+            status=status.HTTP_200_OK
+        )