Refactor TopBarOptions (#5063)

lib/src/interfaces/Options.ts

   /**
    * Change button colors in the top bar
    */
-  buttonColor?: Color;
+
+  leftButtonColor?: Color;
+  rightButtonColor?: Color;
+  leftButtonDisabledColor?: Color;
+  rightButtonDisabledColor?: Color;
   /**
    * Draw behind the navbar
    */