Organize pages hierarchically according to the Sidebar

This issue refers to sorting the pages (or we can say creating the pages in a hierarchical manner) in XWiki space according to their levels by reading the Sidebar of the wiki repository (if exists).
e.g. The following pages have no hierarchy:
1. Page A
2. Page a
3. Page B
4. Page b
Following we can say is a sorted hierarchy:
1. Page A
    1.1. Page a
2. Page B
    2.1. Page b

Since GitHub pages are not structured, the structure can only be created through Sidebar.