The sensory-overloaded tower will offer visitors the chance to do quite a lot, all in one place: They will be able to sing along with a hologram of their favorite pop star, spend their cryptocurrency, marvel at ever-changing digital art on the walls and dine on a 10,000-square-foot outdoor terrace. It will be an enviable perch to gaze out at Times Square, a neighborhood that before the pandemic represented 15 percent of the city’s economic…