Support ARM for packaging as well

[zoonage]

Title says it all really, ARM is becoming fairly popular now.

[karlism]

I will look into implementing this for auto generated packages, especially since my plan is to eventually implement all currently missing functionality in auto generated templates. I will also look into adding support for building packages for Fedora.
I'm not entirely sure if creating separate docker build images for each architecture and platform is the right way to go, as we can use tools like mock and/or fedpkg to use single image (CentOS 8) to build packages for multiple architectures and platforms.

[leneffets]

+1

[magicJie]

+1

[martin-schlossarek]

+1