Use 10% steps for bloom brightness setting (#1423)

src/dusk/ui/graphics_tuner.cpp

@@ -211,7 +211,7 @@ GraphicsTuner::GraphicsTuner(GraphicsTunerProps props, bool prelaunch)
             SteppedCarousel::Props{
                 .min = mValueMin,
                 .max = mValueMax,
-                .step = 1,
+                .step = props.step,
                 .getValue = [this] { return get_value(mOption); },
                 .onChange = [this](int value) { set_value(mOption, value); },
                 .formatValue =

src/dusk/ui/graphics_tuner.hpp

@@ -55,6 +55,7 @@ struct GraphicsTunerProps {
     int valueMin = 0;
     int valueMax = 0;
     int defaultValue = 0;
+    int step = 1;
 };
 
 class GraphicsTuner : public Document {

src/dusk/ui/settings.cpp

@@ -793,6 +793,7 @@ SettingsWindow::SettingsWindow(bool prelaunch) : mPrelaunch(prelaunch) {
                 .valueMin = 0,
                 .valueMax = 100,
                 .defaultValue = 100,
+                .step = 10,
             }, mPrelaunch);
 
         leftPane.add_section("Rendering");