Add more package types for Linux to releases

[dyfer]

From the dev meeting on 2022.07.14

• @mattahorton talked about the need to provide installation stage on Linux to support e.g. browser integration
• we already have .desktop files (they are used in flatpak and in the qmake/meson install stage)
• Fedora provides reasonably up-to-date packages; we also have Flatpak
• It seems that our main focus right now is to add PPA for debian platforms
  • probably two: x64 and arm64
• @ntonnaett suggested to use openSUSE build service

I don't think we have a strict path forward...

• either figure out how to use openSUSE build service, or
• set up building .deb packages ourselves
  • in that case we need to figure out how to handle multiple distributions

[mattahorton]

That was where we landed. We did talk through the idea of providing a Snap package as well.

The goal here is both to provide installation stage capabilities (like .desktop files for browser integration) but also to minimize missing dependencies (like we've seen with the static build on Ubuntu 20.04 recently). I know that Flatpak apps have their own runtime and can wrap up dependencies within the package. I'm not sure about the other ones.

[ntonnaett]

I'm currently dipping my feet into Open Build System. But it will need some time until we have a working repo.

[forsythac]

Does this help us with our flatpack vs other conversation out of band? Thanks for looking into this Nils.