LINCOLN, R.I. — The state police arrested a Providence man Tuesday night on an array of drug charges after a traffic stop on Douglas Avenue in Providence, the state police said.Jorge Velazquez, 21, of 67 Felix St., Apt. 1, Providence, was charged with possession of heroin; possession of cocaine, possession of Oxycodone and possession of crack cocaine.He was held at the Lincoln barracks pending a court appearance on the charges.