4.6.7 first pr (#726)

packages/service/common/system/cron.ts

@@ -0,0 +1,6 @@
+import nodeCron from 'node-cron';
+
+export const setCron = (time: string, cb: () => void) => {
+  // second minute hour day month week
+  return nodeCron.schedule(time, cb);
+};