SPOILER ALERT: This interview contains some plot details for “Superman,” now playing in theaters. In the eyes of many fans, Skyler Gisondo playing Jimmy Olsen in “Superman” is perfect casting. The 28-year-old actor — best known for “The Righteous Gemstones,” “Licorice Pizza” (“Bien. Bien.”) and “Vacation” — stars in James Gunn’s superhero movie as the […]