Add support for Mac Catalyst

[ky1vstar]

Hi, I really love how good your tool works compared to cocoapods-binary. I've successfully integrated PodBuilder to my project and building for iOS works just fine. But when I try to build my project for macOS (Mac Catalyst) it fails, because Xcode cannot find x86-64 for macOS (it manages to find iPhoneSimulator only). build_xcframeworks flag is enabled

[tcamin]

Try installing latest beta:

> git clone -b feature/catalyst_support https://github.com/Subito-it/PodBuilder.git
> cd PodBuilder
> sudo rake install

Now you can try to rebuild all (you may need to pass the --force flag), PodBuilder should autodetect if the project supports catalyst and build accordingly.

I tried on a minimal sample project and it works, if you try it out let me know if it works on your end as well