An 18-year-old Broward County man arrested yesterday was allegedly the first one to whip out a gun in the mass shooting that injured nine people, including a one-year-old child, at Hollywood Beach on Memorial Day. Lionel JeanCharles Jr. was arrested June 5 and processed at the Hollywood Police Department at about 1:30 p.m. before officers escorted him in handcuffs two hours later to the Broward County Main Jail, according to police…