refactor: consume external road compiler

scripts/build-osm2streets-qgis.js

@@ -6,7 +6,7 @@ const os = require("os");
 const { execFileSync } = require("child_process");
 const { JsStreetNetwork } = require("osm2streets-js-node");
 const { qgisPaths } = require("./lib/tool-paths");
-const { buildCustomTurnLaneArrows } = require("../packages/road-compiler/src/compile/turn-lane-arrows");
+const { turnLaneArrows: { buildCustomTurnLaneArrows } } = require("@osm-asset/road-compiler");
 const { readTrafficSignalFeatures } = require("./lib/traffic-signals");
 const {
   SCENE_LAYERS,