title: How to use createThunkAsync without createSlice
body: <p>I have a simple reducer. Which I use in combineReducers and then in createStore. I would like to work with async thunks a little bit to fetch data using axios. What I don't see nowhere is how to use thunk without createSlice functions. Can you point me somewhere or explain?</p>
  <pre><code>import { createAction } from '@reduxjs/toolkit'
  
  export const setMyData = createAction('myData/setMyData')
  
  export const initialState = {
      myData: []
  };
  
  const myDataReducer = (state = initialState, action) =&gt; {
      switch (action.type) {
          case setMyData.type:
              return {
                  ...state,
                  myData: action.payload
              };
          default:
              return { ...state };
      }
  };
  
  export default myDataReducer;
  </code></pre>