LOS ANGELES — Katie Reis has been a Hollywood lighting technician for 27 years, rigging equipment for movies like “Independence Day” and TV shows like “Quantum Leap.” But she hasn’t had a paycheck since May, when the first of two strikes — screenwriters, then actors — forced cameras to stop rolling. Reis, 60, has since been turned down for jobs at Target and Whole Foods. She is now looking into seasonal work at the mall. Her son Alex, a high school senior, recently had to go without new shoes fo