There’s a long list of reasons why Lola Petticrew jumped at the chance to read for Clio Barnard’s stirring kitchen sink drama I See Buildings Fall Like Lightning , and Anthony Boyle’s name sits at the top of it. Honoring Petticrew’s loving nickname for their fellow countryman, “Anto,” star of Netflix hit House of Guinness , was already attached to the project. The Northern Irish duo have known each other since they were 11 years old — they performed together in an amateur drama group called The Rainbow Factory in Belfast — and became, as Petticrew puts it, “the best of friends.” After years spent leaning on one another through drama school, Petticrew’s first job (in which they played brother and sister) and back-to-back auditions, Boyle and Petticrew now find those two kids from west Belfast are about to premiere what will undoubtedly be one of the Croisette’s most talked-about films: Barnard’s fifth feature, written by Enda Walsh ( Die My Love ) and adapted from Keiran Goddard’s book of the same name, is a…