Moved examples into example directory

Moved routes to separate file
Used route constants

src/features/examples/counter/state/actions/incrementAsync.ts

@@ -0,0 +1,13 @@
+import { createAsyncThunk } from "@reduxjs/toolkit";
+import { fetchCount } from "../../services/counterAPI";
+
+// The function below is called a thunk and allows us to perform async logic. It
+// can be dispatched like a regular action: `dispatch(incrementAsync(10))`. This
+// will call the thunk with the `dispatch` function as the first argument. Async
+// code can then be executed and other actions can be dispatched. Thunks are
+// typically used to make async requests.
+export const incrementAsync = createAsyncThunk("counter/fetchCount", async (amount: number) => {
+  const response = await fetchCount(amount);
+  // The value we return becomes the `fulfilled` action payload
+  return response.data;
+});