Feat: UI/UX and ducking compressor

src/state/audio.rs

@@ -85,6 +85,8 @@ pub struct AudioConfig {
     pub show_spectrum: bool,
     pub show_lissajous: bool,
     pub show_preview: bool,
+    pub gain_boost: f32,
+    pub normalize_viz: bool,
     pub layout: MainLayout,
 }
 
@@ -105,6 +107,8 @@ impl Default for AudioConfig {
             show_spectrum: true,
             show_lissajous: true,
             show_preview: true,
+            gain_boost: 1.0,
+            normalize_viz: false,
             layout: MainLayout::default(),
         }
     }