Heroic launcher compatibility

[AXL1994]

As stated in this issue, the flatpak version of Proton-GE doesn't work for other application outside Steam. With the growing popularity of Heroic Launcher, is it possible to make it more app-agnostic to make it compatible with other apps?

[Lctrs]

As stated in the official README, Proton-GE is only for steam games launched inside the Steam client.

For other launchers, you should use https://github.com/gloriouseggroll/wine-ge-custom, but it has not been flatpaked yet.