Backlinks / "pages that link to here" #2864

Describe the feature you'd like
Backlinks: a page can show the list of pages that link to (or redirect to) the current page. This is a common feature in wiki software.

Describe the benefits this feature would bring to BookStack users
For knowledge base use-cases, this feature will help recall and discovery, because pages that link to a target page are usually somewhat relevant to the target page.

There's an explanation on how a similar feature in Notion helps someone.

Additional context

References:

• https://www.notion.so/guides/creating-links-and-backlinks
• https://en.wikipedia.org/wiki/Help:What_links_here