boost(center): Middle of the screen/center position for accessibility

fix #1466

Author: Belphemur

SoundSwitch/Framework/Banner/Position/APosition.cs

@@ -25,4 +25,4 @@ internal class APosition
         public int PositionCenterH(Screen screen, int width) => (screen.Bounds.Width - width) / 2;
         public int PositionCenterV(Screen screen, int height) => (screen.Bounds.Height - height) / 2;
     }
-}
+}