[tlbuild] Initial TeX Live Build on macOS

[Richard Koch]

Folks,

The full TeX Live 2023 binaries built on both Arm and Intel and all tests were passed. Asymptote was also built on both systems and passed all tests. I then created, signed, and adopted hardened runtimes for all files, ultimately creating universal-darwin.tar.xz. I will not send this to Karl because he suggests that there may be a few source changes this week, but it is exactly the file I would send if he requested binaries for macOS.

This build supports Mojave and higher on Intel, and Big Sur and higher on Arm. These are exactly the systems supported last year. In particular, all possible systems running Arm are supported.

Dick Koch