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/app/core/osm_config.py

@@ -75,6 +75,18 @@ STATION_TAG_FILTERS: Mapping[str, Tuple[str, ...]] = {
 }
 
 
+# Tags that describe rail infrastructure usable for train routing.
+TRACK_TAG_FILTERS: Mapping[str, Tuple[str, ...]] = {
+    "railway": (
+        "rail",
+        "light_rail",
+        "subway",
+        "tram",
+        "narrow_gauge",
+    ),
+}
+
+
 def compile_overpass_filters(filters: Mapping[str, Iterable[str]]) -> str:
     """Build an Overpass boolean expression that matches the provided filters."""
 
@@ -89,5 +101,6 @@ __all__ = [
     "BoundingBox",
     "DEFAULT_REGIONS",
     "STATION_TAG_FILTERS",
+    "TRACK_TAG_FILTERS",
     "compile_overpass_filters",
 ]