Galactic-1: A Randomized, Double-Blind, Multicentre, Parallel, Placebo-Controlled Phase 2b Study in Subjects with Idiopathic Pulmonary Fibrosis (IPF) Investigating the Efficacy and Safety of TD139, an Inhaled Galectin-3 Inhibitor Administered via a Dry Powder Inhaler Over 52 Weeks