Update AppStream metadata with Flathub device support
The Flathub MetaInfo Guidelines have been updated with a "Device support" section which describes the controls and display sizes considered as mobile/tablet/desktop.
The purpose is that Flathub can add a filter for mobile/tablet apps, see:
- https://github.com/flathub-infra/website/issues/4089
- https://github.com/flathub-infra/website/issues/4020
The app will then be listed in Mobile Apps on flathub.org.
Ensure that all apps fill the device support correctly.
Edited by Plata Hill