The bronze statue of Sid Hartman was unveiled Wednesday afternoon in downtown Minneapolis.    The 600 pound statue sits at the corner of First Avenue North and Sixth Street outside the Target Center and leading toward Target Field.   A proud, but humble, Sid told the audience how he got a break from others when he was young and was able to get into the sports reporting business with a high school of college diploma.   Sid turned 90 a few months ago and continues to work every day gathering sports information and interviews.