Juraj Fiala authored Jun 25, 2020 and Daniel Garcia Moreno committed Jun 29, 2020

When manually building Fractal with Flatpak, it creates these folders:

- .flatpak-builder/ -- cache folder for downloads/builds
- fractal/ -- build folder, name recommended by the README

Also add .flatpak files (Flatpak bundles), useful when creating builds you want to share for testing.