Section menu and Scrollspy inside the page

# Section menu inside the page and Scrollspy
The package does not have the ability to create a page with a menu on its own sections. That is, moving inside the page.
Implementation example:
https://www.t3sbootstrap.de/demo/menus/section-menus/sidebar - in the form of a menu of sections on the left (can be done on the right)
https://www.t3sbootstrap.de/demo/menus/section-menus/content - in the form of a menu of sections on the top sticky.

For these menus, the Scrollspy component is great:
https://getbootstrap.com/docs/4.3/components/scrollspy/

Start by reviewing the linked section-menu examples and Bootstrap 4.3 Scrollspy documentation to understand the requested sidebar and sticky top-menu behaviors. The work is done when the package can create a page menu for its sections and keep the active section synchronized while scrolling.

Written by the indexing model from the issue text.