initial structure implemented

docs -> _docs

models/core/__init__.py

@@ -0,0 +1,14 @@
+from .gps_point import GPSPoint
+from .camera_parameters import CameraParameters
+from .pose import Pose
+from .polygon import Polygon
+from .validation_result import ValidationResult
+
+__all__ = [
+    "GPSPoint",
+    "CameraParameters",
+    "Pose",
+    "Polygon",
+    "ValidationResult",
+]
+