An organization that started in Camden to keep kids off the streets during summer is opening a new free summer camp in Cumberland County in July. Krista Smith, the executive director of the nonprofit UrbanPromise Millville, said the camp will offer a program that is needed in the area. “I don’t think that there’s a program with the same mission that’s existing in Millville,” said Smith, a lifelong Cumberland County resident. “Our city really needs this,” she said. UrbanPromise, a Christian-based nonprofit, launched nearly 40 years ago in the basement of a Camden church with a mission to keep c…