Light a grill or preheat a grill pan. Brush the quail with oil and season with salt and pepper. Grill the quail over high heat, turning once, until browned, about 5 minutes. Transfer the quail to plates, breast sides up. Using a slotted spoon, remove the goji berries from their liquid and scatter them over the quail. Garnish with the pine nuts and cilantro, drizzle lightly with the goji liquid and serve.