feat(assets): publish reusable area packages

examples/asset-package-resolver.js

@@ -0,0 +1,13 @@
+"use strict";
+
+function resolveAsset(manifestUrl, manifest, id = "main") {
+  const asset = manifest.assets.find((candidate) => candidate.id === id);
+  if (!asset) throw new Error(`Unknown asset '${id}'`);
+  return new URL(asset.uri, manifestUrl).href;
+}
+
+function placement(manifest) {
+  return { ...manifest.placement, coordinateSystem: manifest.coordinateSystem };
+}
+
+module.exports = { resolveAsset, placement };