Feature request : add compatibility for OSX 11 and ARM

[user858753257]

In the actual build the only issue I see is the invisible icon on top of the Desktop .

But I think for the upcoming OS X ARM you have to adjust your code

[alberti42]

I have posted a newer version compiled for Apple M1 and Intel, https://github.com/alberti42/Volume-Control. The new version is a Universal bundle compatible with Intel and M1. Unfortunately I could not test it yet on a M1 arm64 processor because I don't have one available. If it is works for you, I would be very happy to hear your feedback.