feat: Enhance track model and import functionality

- Added new fields to TrackModel: status, is_bidirectional, and coordinates.
- Updated network service to handle new track attributes and geometry extraction.
- Introduced CLI scripts for importing and loading tracks from OpenStreetMap.
- Implemented normalization of track elements to ensure valid geometries.
- Enhanced tests for track model, network service, and import/load scripts.
- Updated frontend to accommodate new track attributes and improve route computation.
- Documented OSM ingestion process in architecture and runtime views.

backend/tests/test_models.py

@@ -29,11 +29,15 @@ def test_track_model_properties() -> None:
         end_station_id="station-2",
         length_meters=1500.0,
         max_speed_kph=120.0,
+        status="operational",
+        is_bidirectional=True,
+        coordinates=[(52.52, 13.405), (52.6, 13.5)],
         created_at=timestamp,
         updated_at=timestamp,
     )
     assert track.length_meters > 0
     assert track.start_station_id != track.end_station_id
+    assert len(track.coordinates) == 2
 
 
 def test_train_model_operating_tracks() -> None: