Restore satosa.internal_data compatibility

Signed-off-by: Ivan Kanakarakis <[email protected]>

Author: c00kiemon5ter

src/satosa/internal_data.py

@@ -1,5 +1,12 @@
 import warnings as _warnings
 
+from satosa.internal import InternalData
+from satosa.internal import AuthenticationInformation
+from satosa.deprecated import UserIdHashType
+from satosa.deprecated import UserIdHasher
+from satosa.deprecated import InternalRequest
+from satosa.deprecated import InternalResponse
+
 
 _warnings.warn(
     "internal_data is deprecated; use satosa.internal instead.",