How to make titles translatable

Afforms we ship with the extension (or that others package in their extensions) have a title in the .aff.json file. Ideally I think that title should be wrapped in ts().

I had a similar problem in the CiviTutorial project and opted to switch from using .json files to .js files. I wrote a little encoder/decoder that would wrap/unwrap a whitelist of keys in ts(). If it's generally useful we could move that code to core and reuse it here.