Global Nutritional Bar Market By Type (by Type: Protein Bars , Meal-Replacement Bars , Snacks Bars , Whole Food Bars , by Flavor: Chocolates , Fruits , Peanut Butter , Savory , and Spices), By Application (Department Stores , Grocery , and Online Retailers), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029