Implements a simple splash screen notice displayed if an x86/Intel macOS
Blender build is ran on an Apple Silicon Mac to warn against reduced
performance.
On the technical side of things, this adds a function that detects if
the current process is currently running through Rosetta using `sysctl`.
Implementation wise, I tried to keep this function contained in a single
conditional preprocessor macro block in the same file for simplicity.
Co-authored-by: Harley Acheson <harley.acheson@gmail.com>
Pull Request: https://projects.blender.org/blender/blender/pulls/124382
9453ff6995