HART — A 57-year-old Hart man who allegedly set a mattress on fire inside an apartment earlier this month has been arraigned in Oceana County’s 79th District Court on a felony charge of first-degree arson. Luna Jesus Trigo, of 2320 W. Baseline Rd., is scheduled to appear for a preliminary exam in district court May 7 at 1 p.m. Trigo’s…