message: Converted UITabBarSystemItem
diff: #import <UIKit/UIKit.h>
  #import <React/RCTComponent.h>
  +@implementation RCTConvert (UITabBarSystemItem)
  +
  +RCT_ENUM_CONVERTER(UITabBarSystemItem, (@{
  + @"more" : @(UITabBarSystemItemMore),
  + @"favorites" : @(UITabBarSystemItemFavorites),
  + @"featured" : @(UITabBarSystemItemFeatured),
  + @"topRated" : @(UITabBarSystemItemTopRated),
  + @"recents" : @(UITabBarSystemItemRecents),
  + @"contacts" : @(UITabBarSystemItemContacts),
  + @"history" : @(UITabBarSystemItemHistory),
  + @"bookmarks" : @(UITabBarSystemItemBookmarks),
  + @"search" : @(UITabBarSystemItemSearch),
  + @"downloads" : @(UITabBarSystemItemDownloads),
  + @"mostRecent" : @(UITabBarSystemItemMostRecent),
  + @"mostViewed" : @(UITabBarSystemItemMostViewed)
  +}), UITabBarSystemItemMore, integerValue)
  +
  +@end
  +
  @implementation NVTabBarItemManager
  RCT_EXPORT_MODULE()
  