CHICAGO — The tables were set and the candles lit. Bouquets of baby’s breath were arranged on black tablecloths, and menus rested atop each plate. Table for Twenty was hosting its first event of the year. Wearing cocktail party attire, diners who paid $115 for a ticket sipped drinks and enjoyed a five-course meal. But this wasn’t a typical private dinner club event. At every place setting, a joint was placed neatly next to the silverware and the food and drinks were infused with cannabis.