Rucaparib Recruiting Phase 2 Trials for Stage IVA Lung Cancer AJCC v8 / Stage IVB Lung Cancer AJCC v8 / Recurrent Large Cell Lung Carcinoma / Recurrent Lung Adenocarcinoma / Loss of Heterozygosity / Lung Non-Small Cell Squamous Carcinoma / Stage IV Lung Cancer AJCC v8 / Recurrent Non-Squamous Non-Small Cell Lung Carcinoma / Recurrent Lung Non-Small Cell Carcinoma / Deleterious BRCA1 Gene Mutation / Deleterious BRCA2 Gene Mutation Treatment