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/models/base.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 from datetime import datetime
 from typing import Generic, Sequence, TypeVar
 
-from pydantic import BaseModel, ConfigDict
+from pydantic import BaseModel, ConfigDict, Field
 
 
 def to_camel(string: str) -> str:
@@ -53,6 +53,9 @@ class TrackModel(IdentifiedModel[str]):
     end_station_id: str
     length_meters: float
     max_speed_kph: float
+    status: str | None = None
+    is_bidirectional: bool = True
+    coordinates: list[tuple[float, float]] = Field(default_factory=list)
 
 
 class TrainModel(IdentifiedModel[str]):