In an interview with CNBC's Jim Cramer, Apple CEO Tim Cook struck an optimistic tone about the iPhone maker's progress bringing more manufacturing to the U.S., indicating that the company is making headway with a number of projects."Since we announced a $500 billion commitment toward the beginning of the year, we were continually working to come up with more ways to bring manufacturing into the United States," Cook said. "It's not really bringing it back, because that manufacturing was not here to begin wit ...