Allow setting click sound for ButtonWidget (#115)

Author: miozune

src/main/java/com/cleanroommc/modularui/widgets/ButtonWidget.java

@@ -28,6 +28,7 @@ public static ButtonWidget<?> panelCloseButton() {
     }
 
     private boolean playClickSound = true;
+    private Runnable clickSound;
     private IGuiAction.MousePressed mousePressed;
     private IGuiAction.MouseReleased mouseReleased;
     private IGuiAction.MousePressed mouseTapped;
@@ -51,7 +52,11 @@ public WidgetTheme getWidgetThemeInternal(ITheme theme) {
 
     public void playClickSound() {
         if (this.playClickSound) {
-            Interactable.playButtonClickSound();
+            if (this.clickSound != null) {
+                this.clickSound.run();
+            } else {
+                Interactable.playButtonClickSound();
+            }
         }
     }
 
@@ -168,4 +173,9 @@ public W playClickSound(boolean play) {
         this.playClickSound = play;
         return getThis();
     }
+
+    public W clickSound(Runnable clickSound) {
+        this.clickSound = clickSound;
+        return getThis();
+    }
 }