RQ added to the project docs

Author: jherr

project-template/README.md

@@ -279,3 +279,84 @@ const peopleRoute = createRoute({
 ```
 
 Loaders simplify your data fetching logic dramatically. Check out more information in the [Loader documentation](https://tanstack.com/router/latest/docs/framework/react/guide/data-loading#loader-parameters).
+
+### React-Query
+
+React-Query is an excellent addition or alternative to route loading and integrating it into you application is a breeze.
+
+First add your dependencies:
+
+```bash
+npm install @tanstack/react-query @tanstack/react-query-devtools
+```
+
+Next we'll need to creata query client and provider. We recommend putting those in `main.tsx`.
+
+```tsx
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+
+// ...
+
+const queryClient = new QueryClient();
+
+// ...
+
+if (!rootElement.innerHTML) {
+  const root = ReactDOM.createRoot(rootElement);
+
+  root.render(
+    <QueryClientProvider client={queryClient}>
+      <RouterProvider router={router} />
+    </QueryClientProvider>
+  );
+}
+```
+
+You can also add TanStack Query Devtools to the root route (optional).
+
+```tsx
+import { ReactQueryDevtools } from "@tanstack/react-query-devtools";
+
+const rootRoute = createRootRoute({
+  component: () => (
+    <>
+      <Outlet />
+      <ReactQueryDevtools buttonPosition="top-right" />
+      <TanStackRouterDevtools />
+    </>
+  ),
+});
+```
+
+Now you can use `useQuery` to fetch your data.
+
+```tsx
+import { useQuery } from "@tanstack/react-query";
+
+import "./App.css";
+
+function App() {
+  const { data } = useQuery({
+    queryKey: ["people"],
+    queryFn: () =>
+      fetch("https://swapi.dev/api/people")
+        .then((res) => res.json())
+        .then((data) => data.results as { name: string }[]),
+    initialData: [],
+  });
+
+  return (
+    <div>
+      <ul>
+        {data.map((person) => (
+          <li key={person.name}>{person.name}</li>
+        ))}
+      </ul>
+    </div>
+  );
+}
+
+export default App;
+```
+
+You can find out everything you need to know on how to use React-Query in the [React-Query documentation](https://tanstack.com/query/latest/docs/framework/react/overview).