add opacity configuration for visualizers

src/renderer/store/settings.store.ts

@@ -285,6 +285,7 @@ const AudioMotionAnalyzerSettingsSchema = z.object({
     mirror: z.number(),
     mode: z.number(),
     noteLabels: z.boolean(),
+    opacity: z.number().min(0).max(1),
     outlineBars: z.boolean(),
     peakFadeTime: z.number(),
     peakHoldTime: z.number(),
@@ -323,6 +324,7 @@ const ButterchurnSettingsSchema = z.object({
     ignoredPresets: z.array(z.string()),
     includeAllPresets: z.boolean(),
     maxFPS: z.number().min(0),
+    opacity: z.number().min(0).max(1),
     randomizeNextPreset: z.boolean(),
     selectedPresets: z.array(z.string()),
 });
@@ -1451,6 +1453,7 @@ const initialState: SettingsState = {
             mirror: 0,
             mode: 5,
             noteLabels: false,
+            opacity: 1,
             outlineBars: false,
             peakFadeTime: 900,
             peakHoldTime: 500,
@@ -1483,6 +1486,7 @@ const initialState: SettingsState = {
             ignoredPresets: [],
             includeAllPresets: true,
             maxFPS: 0,
+            opacity: 1,
             randomizeNextPreset: true,
             selectedPresets: [],
         },