Please provide an example implementation of the classical left drawer.

I mean, a left column with items, and a button on navbar to hide/show it.

Probably it's all easy to do, but for my, a newbie with this package, it's a completely caos to understand where/what to add; and problably there is a ready-to-use component and I am not seeing it...

thanks for this excellent work, and for your help in advance