Add support for vkBasalt

[RickAndTired]

vkBasalt is not working

Setting in the game's launch options does not work
ENABLE_VKBASALT=1 %command%

Running Steam with vkBasalt does not work either
$ ENABLE_VKBASALT=1 steam

Ubuntu 23.10
vkBasalt is installed via apt
vkBasalt.conf located in ~/.config/vkBasalt/vkBasalt.conf
Also tried placing vkBasalt.conf inside the game folder next to the game's .exe

[ashuntu]

Because of the nature of Snap confinement, Steam will not have access to the same packages available to your host system. This is why we have to include things like MangoHUD and GameMode into the Snap itself.

There isn't a real workaround for this other than requesting it to be added into the Snap, so I'll turn this into a feature request.