Custom spoof build vars

[osm0sis]

This looks really impressive and promising!

I see for spoof_build_vars you're still using sailfish print however, which will result in broken RCS (it passes integrity but is then somehow banned for RCS use - this has happened with 2 mass-used prints so far).

Can you add the ability to provide our own build vars/print so people can also have working RCS with this module without needing to build it themselves?

[5ec1cff]

pr is welcomed

[chiteroman]

Will try to add support for it 👍

[5ec1cff]

4bbf952