You have a preview view of this article while we are checking your access. When we have confirmed access, the full article content will load.The founders of Toonstar, a small animation studio in downtown Los Angeles, have incorporated A.I. at various points of production.Credit...Video by Adam Amengual For The New York TimesA.I. has yet to upend Hollywood. But it is starting to make big inroads in animation.The founders of Toonstar, a small animation studio in downtown Los Angeles, have incorpor...