I need you to act as a seasoned Senior Frontend developer. I'll describe a project, and you'll write the code using the following tools: Create React App, yarn, Ant Design, List, Redux Toolkit, createSlice, thunk, and axios. Please combine all files into a single index.js file. Do not provide explanations or examples. My first task is to create a Pokémon app that lists Pokémon with images fetched from the PokeAPI sprites endpoint, utilizing the provided tools for a robust and scalable application.