For many, the days of regal banquets and traditional place settings are a thing of the past. Today’s hosts prefer spontaneity over formality, with spur-of-the-moment meals and relaxed gatherings of friends replacing conventional dinner parties. The Parisian silversmith Christofle, which has been creating finely crafted silverware and home accessories for 179 years, responded to this more casual trend by releasing a new flatware set called Mood. The 24-piece, silver-plated set ($1,000) is housed in a sleek stai…