appstream: Add runtime, sdk and tags to appstream xml
appstream: Add runtime, sdk and tags to appstream xml

handsome-feng/flatpak,matthiasclasen/xdg-app,matthiasclasen/xdg-app,GeorgesStavracas/flatpak,amigadave/flatpak,alexlarsson/xdg-app,handsome-feng/flatpak,GeorgesStavracas/flatpak,alexlarsson/xdg-app,handsome-feng/flatpak,flatpak/flatpak,flatpak/flatpak,GeorgesStavracas/flatpak,handsome-feng/flatpak,matthiasclasen/xdg-app,GeorgesStavracas/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak,GeorgesStavracas/flatpak,alexlarsson/xdg-app,matthiasclasen/flatpak,matthiasclasen/flatpak,alexlarsson/xdg-app,matthiasclasen/flatpak,flatpak/flatpak,amigadave/flatpak,matthiasclasen/xdg-app,amigadave/flatpak,handsome-feng/flatpak,flatpak/flatpak,amigadave/flatpak,flatpak/flatpak