Principal photography is underway on the third installment of New Line Cinema’s hugely successful “Annabelle” films, starring the infamous sinister doll from the “Conjuring” universe. Screenwriter Gary Dauberman (“The Nun,” “IT” films, “Annabelle” films) helms his first feature in the $1.5 billion “Conjuring” franchise. The new horror film is once again being produced by “Conjuring”…