feat: Initialize frontend and backend structure with essential configurations

- Added TypeScript build info for frontend.
- Created Vite configuration for React application.
- Implemented pre-commit hook to run checks before commits.
- Set up PostgreSQL Dockerfile with PostGIS support and initialization scripts.
- Added database creation script for PostgreSQL with necessary extensions.
- Established Python project configuration with dependencies and development tools.
- Developed pre-commit script to enforce code quality checks for backend and frontend.
- Created PowerShell script to set up Git hooks path.

backend/app/api/network.py

@@ -0,0 +1,16 @@
+from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session
+
+from backend.app.api.deps import get_current_user, get_db
+from backend.app.models import UserPublic
+from backend.app.services.network import get_network_snapshot
+
+router = APIRouter(prefix="/network", tags=["network"])
+
+
+@router.get("", summary="Fetch a snapshot of the railway network")
+def read_network_snapshot(
+    _: UserPublic = Depends(get_current_user),
+    db: Session = Depends(get_db),
+) -> dict[str, list[dict[str, object]]]:
+    return get_network_snapshot(db)