Add project scripts and tooling

tools/copy-cesium-assets.mjs

@@ -0,0 +1,26 @@
+import { cpSync, existsSync, mkdirSync, rmSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const root = dirname(dirname(fileURLToPath(import.meta.url)));
+const candidateBuilds = [
+  join(root, "node_modules", "cesium", "Build", "Cesium"),
+  join(root, "web-test", "node_modules", "cesium", "Build", "Cesium"),
+];
+const cesiumBuild = candidateBuilds.find((value) => existsSync(value));
+const target = join(root, "web-test", "public", "cesium");
+
+if (!cesiumBuild) {
+  throw new Error("Cesium package is not installed. Run npm.cmd install first.");
+}
+
+mkdirSync(target, { recursive: true });
+
+for (const name of ["Assets", "ThirdParty", "Workers", "Widgets"]) {
+  const source = join(cesiumBuild, name);
+  const destination = join(target, name);
+  rmSync(destination, { recursive: true, force: true });
+  cpSync(source, destination, { recursive: true });
+}
+
+console.log(`Copied Cesium runtime assets to ${target}`);