Mirror request for arch4edu

[petronny]

arch4edu is a 3rd party Arch Linux repository for education, including many softwares for computer science, mathematics, physics, biology research and so on.
arch4edu is widely used in many countries.
And mirroring arch4edu will help many Arch Linux users around the world.

• homepage: https://github.com/arch4edu/arch4edu
• rsync upstream: rsync://mirrors.tuna.tsinghua.edu.cn/arch4edu
• Size: 20-30 GiB

[Mhowser]

@Showfom it has been 7 months, any chance you can review this?

[Showfom]

We will plan to add mirror for arch4edu.

[Showfom]

Mirror completed in Germany:

https://mirrors.xtom.de/arch4edu/