Feature Request: Remove title bar from Mac app

[shawn-mitch]

Removing the title bar and having the traffic lights float over the sidebar would add a really nice coat of polish to an already great-looking app. It would give the impression that Notesnook is a native app instead of a webpage in an Electron wrapper.

Here are a couple of examples:

Standard Notes

Craft

According to the Electron docs, this should™ be relatively easy.

There is also likely an argument to do the same for Window, but I can't speak to that as I'm a Mac user.

[candroid-man]

It would also be cool to see this on Linux, adding this to #412