Adding 'Insert Checklist' icon in Note Editor

### What
macOS version is the only not having 'Insert Checklist' icon.

Also, see comment here: p2XJRt-2J3-p2#comment-5169

> I’d vote for removing the Format menu item once we move the icon to the top bar, since it only has that one thing in it and the name is a bit of a false promise (I would’ve expected to find bold and italics under Format for example).

### Why
It's available on iOS, Electron and Android.

Start by comparing the macOS Note Editor with the existing Insert Checklist behavior on iOS, Electron, and Android. The work is done when macOS has the Insert Checklist icon in the top bar, with the related Format menu treatment resolved.

Written by the indexing model from the issue text.