Separate build and archive commands in Xamarin builder: * Calls to `mdtool archive` utility should be preceded by `mdtool build` otherwise archive will fail. 
Separate build and archive commands in Xamarin builder:
* Calls to `mdtool archive` utility should be preceded by `mdtool build` otherwise archive will fail. 
bitrise-steplib/steps-xamarin-builder,bitrise-steplib/steps-xamarin-builder