The death of a Western Massachusetts man whose body was found inside a New Hampshire apartment last week has been ruled a homicide, the New Hampshire Attorney General’s Office announced Friday.Police found 22-year-old Springfield resident Demetrius White dead inside an apartment on Nelson Street in Haverhill, New Hampshire, shortly after 1 a.m. on April 20, prosecutors said. Hartford, Connecticut, resident Jayden McClanahan, 21, was arrested on …