moved definitions of data classes into module where used

shared/mongodb/classes/information_value.py

@@ -0,0 +1,13 @@
+"""Definition of InformationValueData data model."""
+
+from __future__ import annotations
+
+from .data_model import DataModel
+
+
+class InformationValueData(DataModel):
+    """InformationValueData data model."""
+
+    given_new: float
+    ideal_real: float
+    central_marginal: float