flatpak: Handle flatpak+https URI scheme for flatpakrefs
Since web browsers no longer make it easy to open a downloaded file with a specific (or even the default) application as soon as it’s downloaded – they now just download to disk – flathub wants to use a different URI scheme to link to flatpakref files, so that they will get loaded directly in gnome-software or KDE Discover without the user having to find them in the Downloads folder and launch them.
Implement support for that, if the flatpak plugin is enabled.
Signed-off-by: Philip Withnall pwithnall@gnome.org
Fixes: #2240 (closed)
Closes #2240 (closed)