Octane X with Metal support for macOS

[Metin_Seven]

@anon80315389

Mr. Urbach avoid the clear answer the question regarding how fast Metal is when compared to CUDA. NVidia has advantage in terms of Denoising (Tensor cores) and hardware raytracing (RTX cores) at the moment

Yes, I guess this is predominantly a matter of the hardware race between NVIDIA and AMD. Metal is just a bridge between 3D software and GPU hardware.