Adding support for Catalyst (Running iOS framework on macOS)

[rligocki]

Hey guys,

few weeks ago I started development of custom design ground control station software based on MAVSDK. Our main target is iOS devices. Also I started to think about using Catalyst technology to run this app also on macOS. Problems is that when I enabled this feature in xcode, I get error: Showing Recent Messages While building for Mac Catalyst, no library for this platform was found in '/Users/roman/Library/Developer/Xcode/DerivedData/AirUAWARE-fvgjbgnijdphyfgoroqjlvvbhtmf/SourcePackages/artifacts/MAVSDK_Swift/mavsdk_server.xcframework'.

From this error message it looks like there is need to build MAVSDK for both architectures and pack it inside xcframework. Does anybody have some experiences in this topic? Maybe this could be done just by modifying github action.