feat(collectors): add ArcGIS landing points and cable-landing relation collectors

- Add ArcGISLandingPointCollector for FeatureServer/1 (landing points)
- Add ArcGISCableLandingRelationCollector for FeatureServer/3 (cable-landing relations)
- Register new collectors in __init__.py
- Fix earth cables.js with cable_id grouping for highlight

frontend/public/earth/js/cables.js

@@ -312,6 +312,7 @@ export function handleCableClick(cable) {
   lockedCable = cable;
   
   const data = cable.userData;
+  // console.log(data)
   updateCableDetails({
     name: data.name,
     owner: data.owner,