Include x86-64 build for macOS in GH Workflows

[gregerolsson]

Would it be possible to add an automated build for macOS x86-64 in the GitHub Workflow file? Currently the macOS release is for ARM64/Apple Silicon only and can not be run on an x86 machine:

0.16.0

LÖVR.app/Contents/MacOS
❯ file lovr
lovr: Mach-O 64-bit executable arm64

The automated 0.15.0 release is built for x86:

0.15.0

LÖVR.app/Contents/MacOS
❯ file lovr
lovr: Mach-O 64-bit executable x86_64

[bjornbytes]

Thanks for bringing this up, I totally spaced on the x86/arm split. Here's what I think the current situation is:

• I built the v0.16.0 macOS release on an M1 CPU. This was probably a mistake, as it doesn't work on a lot of machines.
• GitHub actions was added afterwards and is currently producing x86_64 binaries. GitHub actions doesn't support M1 yet.

Also, currently the macOS release requires MoltenVK to run properly. LÖVR should probably package that library in the app.

I'm looking into these as I get access to hardware, which currently isn't very often.