For the past six years, Mary Anne Mason has been working her dream job as a justice on the 1st District Appellate Court.But her role on the reviewing court — often the last stop for litigation filed in Cook County — doesn’t give her a whole lot of time to do other things. Mason said she frequently works nights and weekends.“I’m ready to do other things,” Mason said. “I have a lot of interests, and this job, as much as it’s been my dream job, has been more than a full-time job …