Firestorm Secondlife Viewer

Install doesn't select executable but that just requires going into the game directory and selecting the firestorm executable under firestorm-secondlife-viewer/firestorm.

For Arch users: I had to install `libxcrypt-compat` and `lib32-libxcrypt-compat`to get it to run. Check if you have these installed in case game is rejecting to start, otherwise check lutris logs to see your problem. For other distros, please google what packages you need to install in case it is not running off the bat.