WASHINGTON — The House committee investigating the Jan. 6 attack on the U.S. Capitol formally issued its extraordinary subpoena of Donald Trump on Friday, demanding testimony from the former president who lawmakers say “personally orchestrated” a multi-part effort to overturn the results of the 2020 election.The nine-member panel issued a letter to Trump’s lawyers saying he must testify, either at the Capitol or by videoconference, “beginning on or about” Nov. 14 and continuing for …