getCategories() (#6905)

~~There is no reason to ask why I need this.~~

core/src/mindustry/ui/dialogs/SettingsMenuDialog.java

@@ -261,6 +261,10 @@ public class SettingsMenuDialog extends BaseDialog{
         addCategory(name, (Drawable)null, builder);
     }
     
+    public Seq<SettingsCategory> getCategories(){
+        return categories;
+    }
+
     void rebuildMenu(){
         menu.clearChildren();