Add support for changing default CPU & igpu names for macos

[renhiyama]

Since pentium g620 (sandy bridge) isnt supported by macos, I wonder if I would be able to run macos by faking with a working cpu configuration, like core i3 2nd gen: https://www.tonymacx86.com/threads/pentium-g620-with-os-x.46414/post-297764

Would it be possible?

[github-actions]

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