message: TabbarItem: deprecate label, introduce indicator
diff: position: relative;
  }
  -.TabbarItem__label {
  +.TabbarItem__label .Counter {
  position: absolute;
  top: -2px;
  right: -9px;
  }
  -.TabbarItem__badge {
  +.TabbarItem__label .Badge {
  position: absolute;
  top: -2px;
  right: -4px;
  