NEW YORK — “The Simpsons,” ”Cinderella” and several movies from the Star Wars and Marvel universes will share a streaming home Tuesday as Disney Plus debuts. Subscribers will initially get more than 500 movies and 7,500 TV episodes. That’s expected to grow to 620 movies and 10,000 episodes in five years, as existing deals with rival streaming services expire. The service will cost $7 a month, or $70 for the year if paid up front.