Safety is the new luxury in Gotham. A new app called Protector will offer New Yorkers on-demand access to armed ex-military and law enforcement to chauffeur them around town. “Ultra high-profile individuals like Elon Musk and Jeff Bezos have dedicated full-time protection teams in place, but for most people, navigating security options is more challenging than it should be,” Protector app founder and CEO Nick Sarath told The Post this week. The app, which launches Tuesday in NYC and Los Angeles, costs $200 an hour for a Protector and a driver. But the price can skyrocket depending on the client’s...