NEW YORK — Former New York City Mayor Rudy Giuliani filed for Chapter 11 bankruptcy protection in Manhattan on Thursday, less than a week after he was socked with a $148 million damage award for defaming two Atlanta election workers. Giuliani listed debts as high as $500 million and about $10 million in assets in bankruptcy papers filed in Manhattan federal court. Last week’s mammoth judgment came after a Washington, D.C., jury determined his campaign of lies against Ruby Freeman and Shaye Moss provoked a deluge of vicious and life-altering threats. In a statement, Giuliani spokesman Ted Goodm…