Indicate flatpak availability

[Kazhnuz]

Flatpak is a way to get application that isn't tied to a particular distribution. Several apps of this list are available through flatpak (and often flathub). I think that it might be a great idea to have some icon for flatpak-available applications.

Maybe via some icon, with a link to the flatpak repository or the instruction to install it ?

[lokesh-krishna]

This is a fantastic idea! I think we should only link to the relevant flatpak repository though and add a link to instructions on installing flatpak apps at the start of the list.

[Kazhnuz]

For application in Flathub, it could be possible to link to the application page on the beta flathub store ? ( exemple : https://beta.flathub.org/apps/details/org.gnome.Calendar )