add a horizontal progress bar

[AE-Hertz]

I will a add a progress bar on page to show how much content have been scrolled.

Describe the solution you'd like

this will add a feature that tells user how much they have gone through the site and how much left.

Requirement/Document

NO

I am expecting a level 2 label and , assign me this under gssoc-ext and hacktoberfest label.

[AE-Hertz]

/assignme