[Cron] could you generate data for OpenGalaxy?

### Description

Reference: https://github.com/X-lab2017/open-galaxy/issues/34

Hi guys, may I request for a cron task generating data for [OpenGalaxy](https://github.com/X-lab2017/open-galaxy)? If you can help, please describe how you will have filtered nodes and links to decrease the size of the graph data when the PR is created.

### Cron Expression

every month