Is your feature request related to a problem? Please describe.
We are playing with Kotlin Multiplatform projects at the moment and publishing our artifacts via JitPack. But JitPack builds only on Linux so we can't build some Native targets (e.g. iOS), as it requires macos host. Taking into account that Github Package Registry is coming, I think it would be nice to add macos host to JitPack.

Describe the solution you'd like
Add ability to publish Kotlin Multiplatform libraries with Native targets

Describe alternatives you've considered
Manual publishing to JCenter, signed up for Github Package Registry beta

Additional context
Travis can be configured to build on multiple hosts, perhaps same technique could be used