The New Jersey man accused of attacking Salman Rushdie with a knife in 2022 has now been charged with terrorism after federal authorities alleged that he tried to assassinate the author on behalf of a Muslim terrorist group. Hadi Matar, 26, of Fairview, appeared in federal court on Wednesday on three separate terrorism charges, the U.S. Attorney’s Office District of New Jersey said in a news release. In 1989, Ayatollah Ruholla Khomeini, an Iranian Muslim leader, issued a fatwa, or an official order from an Islamic leader, calling for the death of Rushdie in the wake of protests to ban his cont…