On the same day that that the Bahamas extradited FTX co-founder and former CEO Sam Bankman-Fried to the U.S. to face criminal charges, two former executives at FTX and Alameda Research pleaded guilty Wednesday to federal fraud charges. Caroline Ellison, 28, the former chief executive of Alameda Research — the crypto trading company founded by Bankman-Fried — and Zixiao (Gary) Wang, 29, co-founder of crypto platform FTX and its former ch …