using xlsx lib instead of exceljs, export excel files

packages/api/src/shell/finalizer.js

@@ -0,0 +1,12 @@
+const finalizers = [];
+
+module.exports = {
+  async run() {
+    for (const func of finalizers) {
+      await func();
+    }
+  },
+  register(func) {
+    finalizers.push(func);
+  },
+};