A redesigned Mercedes-Benz GLC-Class was revealed last year, and on Tuesday the handsome compact crossover spawned its GLC-Class Coupe variant. Both models start sales in the spring, though the GLC-Class arrives as a 2023 model and the GLC-Class Coupe as a 2024 model. Just the one grade has been announced for the GLC-Class Coupe, a GLC 300 4Matic…