feat(site-finder): render OSM utility-infrastructure layer on analyze map (#1746)
Section2 "Сети" map now shows the OSM engineering-networks layer
(osm_utility_infrastructure_ekb, endpoint /parcels/{cad}/utility-infrastructure)
alongside the NSPD connection-points + ЗОУИТ layers from #1751, on the same map.
- useUtilityInfrastructure hook (react-query, mirrors useConnectionPoints)
- UtilityInfrastructureLayer: Point→CircleMarker, LineString/Polygon(+Multi)→GeoJSON,
per-kind colour (power/water/gas/heat/communication/sewage), popups
- UtilityLayerControlPanel: collapsible legend, per-kind toggle + count
- SiteMap: optional utilityInfrastructure prop + visibleKinds state (CP/ЗОУИТ unchanged)
- 12 unit tests (geometry parsing + [lon,lat]→[lat,lon] swap + grouping)
Refs #1746
Light1YT
854fa69a8b