Add zombie polar bear, an icy zombie variant, camel and polar bear armor

My idea was that to add a new mob, a zombie polar bear, since we already hsve the stray skeleton, you could add a zobie polar bear and an icy zombie variant, so that we could bring some variety and new ways to explore to the game, a zombie polar bear will be cool with an ice zombie on him holding a spear, it will be a cool pet too, and i suggest that regular polar bears could be tameable and rideable too, and since we have the horse and nautilus armor, you could add a camel and polar bear armor too