Support for universal2

We want to package our application to support both old and new Mac's. We build our application (SABnzbd) on GitHub Actions.

However, after I thought we passed the last hurdle by cryptography supporting universal2, it now turns out that it still fails to run because even if I build from sources, cffi is linked to the x86 version of libffi. I tried compiling libffi for both architectures, but it fails due to a know error/bug in libffi. From your work here I see you managed to compile both arm64 and x64 wheels separately. Is there any chance you would be willing to combine them into a universal2 one? I could do this myself, but it would be really messy.

Thanks in advance!