Build macOS binary on GitHub Actions Linux runner

[kitsuyui]

Motivation

macOS runner costs 10 times more than Linux runner.

https://docs.github.com/en/billing/managing-billing-for-github-actions/about-billing-for-github-actions#minute-multipliers

Of course, it's free for public repositories, but the difference is large for private repositories.
Conceptually, it is possible to build macOS binaries on Linux runners, but there are some points to be careful about, so I would like to prepare an example.