Fix GeoJSON returned by /navdata endpoint

lib/www/server/lib/db/gis/navdata/get.js

@@ -7,7 +7,10 @@ async function lines (options = {}) {
 	const client = await pool.connect();
 
 	const text = `
-		SELECT ST_AsGeoJSON(ST_MakeLine(geometry)) geojson
+		SELECT json_build_object(
+			'type', 'Feature',
+			'geometry', ST_AsGeoJSON(ST_MakeLine(geometry))::json
+		) geojson
 		FROM (
 			SELECT geometry
 			FROM real_time_inputs