macOS package missing a title

[directionless]

The macOS packages are built by running pkgbuild and then using productbuild to flatten it. Experimenting, this causes the title to be lost. It looks like the distribution.xml that productbuild synthesizes, lacks a title attribute. I'm working through what a correct pattern is. It's probably to either ship a distribution.xml, or have a step to extract and modify it

[directionless]

As long as I'm monkeying with the distribution.xml, we should set a minimum support os version. https://developer.apple.com/library/archive/documentation/DeveloperTools/Reference/DistributionDefinitionRef/Chapters/Distribution_XML_Ref.html