Flatpak/Appimage support for Linux

[CaptainMuskrat]

I would like to request a Flatpak and/or Appimage for the Doom Retro project. Either option would make for easier packaging for Linux distributions, and a better time for users than having to compile it yourself.

https://docs.appimage.org/

https://appimage.github.io/appimagetool/

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

[bradharding]

Thanks for the suggestion. Unfortunately, as I don't have a Linux system, this is not something I'd be able to do myself. If you, or someone else, would like to submit a pull request with these, it would be greatly appreciated!