Plant-based Bars Market Size, Share, and COVID-19 Impact Analysis, By Type (Cereal/Granola Bars, Protein Bars, Energy Bars/Meal Replacement Bars, Fruit & Nut Bars, and Others), By Distribution Channel (Supermarkets/Hypermarkets, Convenience Stores, Specialty Stores, Online Retail Stores, and Others), and Regional Forecast, 2023-2030