ALEXANDRIA — William Kent Krueger has been asked about Cork O’Connor for so long, you’d think he’d be tired of talking about him by now. But Krueger, who wrote the character into existence back in 1998, talks about his protagonist of more than 20 novels like a longtime friend. Speaking from Arizona and his book launch tour for the latest installment in the series, “God’s Country,” Krueger says, “One of the first and best decisions I made in writ…