I never really used this feature in Astra, and now that Kawari can
perform the login process for you (and just point it towards a Sapphire
server) I don't see a reason to support it anymore.
This uses the same profile system as the regular game, and can be used
to download the current benchmark (currently hardcoded, to be fixed
later.) Or as always, install it offline from an existing zip.
The windows should properly close when necessary, and the setup can no
longer loop itself because it didn't re-read the game version. You can
now select another profile's game installation when setting up a new
profile.
