[DX] Rework building process, and add build/watch scripts to packages package.json

Author: Kocal

assets/package.json

@@ -7,7 +7,8 @@
     "main": "dist/abstract_map_controller.js",
     "types": "dist/abstract_map_controller.d.ts",
     "scripts": {
-        "build": "echo 'The build script is not yet configured.' && exit 1",
+        "build": "node ../../../bin/build_package.js .",
+        "watch": "node ../../../bin/build_package.js . --watch",
         "test": "echo 'The test script is not yet configured.' && exit 1",
         "lint": "biome lint --write",
         "format": "biome format --write",