[Feature Request] Hide SideBar button Toggle

What is your enhancement?

For a lot of use cases, beside the auto hide of the side bar when the screen width is under 1200px, it would be very useful to have a manual toggle to do this. Even in large screens, a lot of times we want to hide the side bar for better content view, like viewing reports, have a nicer layout for pages that have a lot of elements and interactions, etc. Right now, because of the way the hide the sidebar event is done, its hard to add such a button. Thanks