Jennifer Maas TV Business WriterA “feel-good” medical procedural from Michael Strahan, Constance Schwartz-Morini and “The Resident” executive producer Marc Halsey is in development at ABC, Variety has learned.Titled “The Front Line,” the potential series is centered around Sebastian “Bass” Clark, a professional athlete-turned-doctor who left the front line of the football field to start over on the front lines of healthcare as a medical resident — a transition that a handful of real-life NFL players have actually made. The project follows Bass and an ensemble of doctors and staff at a prestigious Pittsburgh hospital as they navigate high-stakes medical cases with all the adrenaline, warmth and big-heartedness of a great sports movie.