How to build mac app bundle for Tiberian Sun?

[ShikiSuen]

The mac build script in the main OpenRA repository only supports building the 1st-gen C&C games at this moment.

[Sleipnir]

The Tiberian Sun mod isn't ready for public release, so is not yet implemented into the packaging scripts that build installers and bundles.

[Summers]

Thank you for your help, and for all your work in keeping this community alive. I'm very grateful to be able to play all the old CnC games again!