As far as I can tell, there is no helper yet for Flatpak packages.
With that in mind, hows the best way to install/use them, and keep them up to date?
A) Make a separate template for Flatpaks. Make a separate VM for Flatpaks. Install in the template.
B) Use a standard template. Install the Flatpaks in their own VM.
C). Install Flatpaks in the VMs they are needed?
If I understand correclty, A) the Flatpaks will be updated? Right?