title: react-admin Create a custom page which can be accessed from menu sidebar
body: <p>I'm new to react-admin, how can I create a custom page that can access from menu sidebar? What I'm looking for is similar to this tutorial: <a href="https://marmelab.com/blog/2019/03/07/react-admin-advanced-recipes-user-profile.html" rel="noreferrer">https://marmelab.com/blog/2019/03/07/react-admin-advanced-recipes-user-profile.html</a> but I need to be able to access that Profile page from an icon in left menu sidebar just like other Resource. Thanks</p>