Building SuperCollider (and plugins) on Mac M1

I’ve compiled SC for M1. I’ll check what went into it and report on the GH issue.

I actually happened to also run VSTPlugin with it! (Thanks @Spacechild1 for amazing work!) I had to allow the binaries through the gatekeeper and then it worked. However, I’m actually not sure if the VST in question was Intel or Universal - I’ll check and report back.