added infrastructure code

data_store/dto/annotation.py

@@ -0,0 +1,16 @@
+"""Definition of Annotation DTO."""
+
+from .type_checking_base_model import TypeCheckingBaseModel
+from .distance_enum import DistanceEnum
+from .angle_enum import AngleEnum
+from .point_of_view_enum import PointOfViewEnum
+from .contact_enum import ContactEnum
+
+
+class Annotation(TypeCheckingBaseModel):
+    """Data Transfer Object representing an Annotation."""
+
+    distance: DistanceEnum
+    angle: AngleEnum
+    point_of_view: PointOfViewEnum
+    contact: ContactEnum