Left-handed pitcher Blake Snell is signed with the Dodgers.The now-former Giants starter agreed to a five-year, $182 million contract, The Post’s John Heyman confirmed.The deal is pending a physical.The former Cy Young winner is coming off a season in which he went 5-3 for San Francisco with a 3.12 ERA in 20 starts.Snell struck out 145 batters over the course of 104 innings pitched...