Veronica Mars and Zach Braff have proved that the public has an appetite for funding unfathomably wealthy celebrity’s pet projects, so it was only a matter of time before more stars start bringing their film ideas to the public. Leading the charge is James Franco, who’s looking to film a $500,000 trilogy about his high school years. Sure. Sounds great. To his credit, Franco is promising to donate any profit his films make to charity, so at least he’s paying it all forward …