Hide notes

Is your feature request related to a problem? Please describe.
Although I self host all of my notes and they are secure, I often have to access them at my workplace or in the public. It would be great to have the ability to hide the note(s).

Describe the solution you'd like
From the context menu I am able to select new option to hide the note. Also in the sidebar, add new option to toggle hidden notes. Please see screenshot below.

Describe alternatives you've considered
Category SECRET works well, but with the small amount of note, titles are still visible

Additional context

[joshtrichards]

Let's consolidate this with #1109.