Feature request: Percentage scrollbar look style

[0xJes]

Is your feature request related to a problem? Please describe.
Completely hiding the scrollbar to gain all horizontal space creates little problem where you can't guess how long the page is and what part of the page you are.

Describe the solution you'd like
Would like a style of scrollbar in “Scrollbars look” that hides the main one and shows a text percentage of scroll in a page, 0% means top of the page and 100% means bottom, this is used in browsers like qutebrowser to gain a bit of horizontal space while you can still guess how long is the page (by looking how fast it increments by scrolling) and in what part you are.

Describe alternatives you've considered
The Percent Scrollbar extension for Firefox implement this, but it is in “experimental” phase and it updated a year ago and looks like stagnated, the extension implements autohiding of the text that would be nice to have and also font configuration.

Additional context
See https://addons.mozilla.org/en-US/firefox/addon/percent-scrollbar/

[fastaddons]

I will look into it. There is also issue #19 to have a same behavior as on phones where space is limited and scrollbars are:

• invisible when page not moving
• visible but thin when moving page

Additionally maybe make them thick when mouse is over it.