Add an option to disable the side menu?

Hi, what do you think about adding an option to disable the side menu (not rendering it to the DOM)?

Rationale:

• Give users the option to opt out
• More performant
• Less issues with scrolling

In my use case, I've been using CSS to hide the side menu as I have other sidebar to show.
And recently, I've bumped into an issue with the scroll (similar to https://github.com/Redocly/redoc/issues/1177), I ended up adding a callback to remove the side menu as it turns out to be the quick-fix:

Redoc.init(spec, {
  disableSearch: true
},
document.querySelector("redoc"),
function() {
  document.querySelector(".menu-content").remove();
});

If we get a greenlight on this, maybe we can work on a PR to make it happen 🙂
Thanks!

Start with the Redoc.init configuration shown in the issue and trace how the side menu represented by .menu-content is rendered. Define an option that prevents it from being added to the DOM, while preserving the existing menu behavior when the option is not enabled; verify the resulting rendering and scrolling behavior.