A cast of Hollywoodstarsmay soon swarmBeacon Hill to charm rumpled state lawmakerswhile toutingpublic subsidies for the movie industry. The big-name actors with local roots are ready to lobby for tax ``incentives'' for major movie companies that shoot their productions in the Bay State, film industry supporters Cambridge shooting star Ben Affleck and his pal, ``Bourne Supremacy'' idol Matt Damon; HBO's ``Entourage'' producer Mark Wahlberg, of Dorchester, and fellow Dot guy Neal McDonough of TV's ``Medical Investigation;'' and deadly serious thespian Chris Cooper, currently residing in the Hub's suburbs: they're all ready to make the tax relief pitch, according to state...