Allays can be trapped in curse of binding books for easier transportation

Despite their speed and player detection range, trying to bring the large numbers of allays found in outposts or mansions to a certain spot in the world is difficult and frustrating. An easier and more intuitive way to transport the mobs over the long distances from where they're found to your base would greatly help. One solution could be binding allays to curse of binding books. This would allow for easier transportation and storage. It could even simplify setting them up in item sorters. Finally, it gives the player incentive to search for curse of binding books in villager trades.