Summary

Add vkBasalt as a configurable per-game post-processing integration in the Games tab.

Proposed Implementation

Detect whether vkBasalt is installed.

Allow enabling/disabling it per game.

Provide a simple configuration UI for commonly used effects such as:
CAS/sharpening
FXAA/SMAA
LUTs
Other supported effects

Allow selecting or managing per-game vkBasalt configuration.

Automatically generate the required environment/launch configuration.

Keep advanced custom configuration available without cluttering the default interface.

Goal

Make vkBasalt easy to configure alongside MangoHud, Gamescope, ScopeBuddy, OptiScaler, and other per-game integrations.