When the sneakers didn’t sell, the Bibles bombed and Truth Social crashed, Donald Trump went back to basics to raise money — picking pockets. In a letter received by Republican digital vendors this week, the Trump presidential campaign is demanding down-ballot candidates who use his name, image and likeness in fundraising appeals to fork over at least 5% of the proceeds to the campaign. “Beginning tomorrow, we ask that all candidates and committees who choose to use President Trump’s name, image, and likeness split a minimum of 5% of all fundraising solicitations to Trump National Committee JF…