A Phase II Study of Adjuvant Treatment With Cisplatin-based Chemotherapy Plus Concomitant Atezolizumab in Patients With Stage I (Tumors ≥ 4cm), IIA, IIB, and Select IIIA [T3N1, T4N0-1] Resected Non-small Cell Lung Cancer (NSCLC) and the Clearance of Circulating Tumor DNA (ctDNA)