Linux client adds itself to autostart on every launch, with no way to disable this behavior

Describe the bug Every time the linux client is launched, it adds itself to XDG autostart (~/.config/autostart) with no ability to disable this from inside the client itself.

To Reproduce Launch the linux appimage.

Expected behavior Either of: only add to autostart on first launch, prompt the user before doing so, or add an option to disable this

Client System (please complete the following information):

• Outline Client Version: Linux 1.8.1
• Your Operating System: Arch Linux