Support application generation on Linux by flatpak

[gozes]

So I was watching your talk at ESUG '23 and you mentioned Linux support is an issue because of the package variety, RPM/Deb/PKBuild etc, but given this is for desktop app won't it be better to only support flatpak builds so that I, as the hypothetical developer, can just submit my app to Flathub so that it can be installed on any Linux distribution regardless of the underlying distribution packing format. That way only one Linux build system needs to be supported.

Just an idea

https://docs.flatpak.org/en/latest/first-build.html