Manifest permissions

Hi there. It seems some more permissions and env. variables have been added/removed over time to the Steam Flatpak. Could you take a look at their manifest to see if you can include/remove new permissions from the Protontricks Flatpak too?

https://github.com/flathub/com.valvesoftware.Steam/blob/beta/com.valvesoftware.Steam.yml (Beta branch I believe)
https://github.com/flathub/com.valvesoftware.Steam/blob/master/com.valvesoftware.Steam.yml (master/stable branch)

And also, something I want to highlight: the network manager permission is not used by them by default. See https://github.com/flathub/com.valvesoftware.Steam/wiki#app-starts-slower-than-native.

Thanks in advance.

Comparez le manifeste Flatpak de Protontricks avec les fichiers manifest Steam liés sur les branches beta et master. Examinez les différences de permissions et de variables d’environnement, notamment la permission du gestionnaire réseau, et confirmez que les modifications appropriées sont reflétées dans Protontricks sans ajouter de permissions inutilisées.

Rédigé par le modèle d'indexation à partir du texte de l'issue.