A group of barnyard bovines find a typewriter and use it to demand better treatment from their owner: This is the storyline of Click, Clack, Moo: Cows That Type, a children’s book by author Doreen Cronin and the season-closing production of Asheville Creative Arts. The show, which includes acting, live music, dance and puppetry, will open at The Magnetic Theatre on Friday, July 21.