Add a .desktop file

[VaiTon]

While trying to package the IDE as a Flatpak, I noticed that the project doesn't provide a .desktop file. I created one for the packaging, but Flathub requires it to be upstream.

[Desktop Entry]
Name=TuProlog IDE
Exec=tuprolog-ide
Type=Application
Icon=it.unibo.tuprolog.ide
Categories=Development;

Can I open a PR for it? Where should I put it?

[gciatto]

Apologies for my late reply.
Yes please, open a PR