Add shortcuts to simple example

Author: djhi

examples/simple/src/Layout.tsx

@@ -1,6 +1,12 @@
 import * as React from 'react';
 import { ReactQueryDevtools } from '@tanstack/react-query-devtools';
-import { AppBar, Layout, InspectorButton, TitlePortal } from 'react-admin';
+import {
+    AppBar,
+    Layout,
+    Menu,
+    InspectorButton,
+    TitlePortal,
+} from 'react-admin';
 import '../assets/app.css';
 
 const MyAppBar = () => (
@@ -10,9 +16,20 @@ const MyAppBar = () => (
     </AppBar>
 );
 
+const MyMenu = () => (
+    <Menu>
+        <Menu.ResourceItem name="posts" keyboardShortcut="g>p" />
+        <Menu.ResourceItem name="comments" keyboardShortcut="g>c" />
+        <Menu.ResourceItem name="tags" keyboardShortcut="g>t" />
+        <Menu.ResourceItem name="users" keyboardShortcut="g>u" />
+    </Menu>
+);
+
 export default ({ children }) => (
     <>
-        <Layout appBar={MyAppBar}>{children}</Layout>
+        <Layout appBar={MyAppBar} menu={MyMenu}>
+            {children}
+        </Layout>
         <ReactQueryDevtools
             initialIsOpen={false}
             buttonPosition="bottom-left"