NEW YORK — Darwin Del Fabro is all about queer power. With the horror film “They/Them” debuting on Peacock Friday, the 25-year-old Brazilian actor and singer wants viewers to feel empowered by their own “queerness and uniqueness” — and use that feeling to change their lives. “Take me as an example,” Del Fabro, who stars in the film as the mysterious outsider Gabriel, told the Daily News. “I’ve always wanted to be an actor doing an international career here in America, and I’m getting those chances because I’m confident in who I am and [in] my queerness — and that’s my power.” “They/Them” (pron…