Support HTML (Raw?) In Descriptions of Shelves and Books

[tiredofit]

Describe the feature you'd like
The ability to parse HTML in descriptions of shelves and books

Describe the benefits this feature would bring to BookStack users
Richer content display as an introduction to a shelf or book.

Additional context
Use Case: Adding tables or formatting in the description would be useful for those using Bookstack for rich "introductions" to the Shelves/Books.

[ssddanbrown]

Related to #1076 and #1666.

[charleslcso]

I wish to add a hyperlink in descriptions. Use Case: I use Bookstack as a knowledge base application, while in description pointing users to a Support System.

[ssddanbrown]

Via PR #4729, there is base level of HTML support in descriptions of shelves/books/chapters, although no direct HTML input with instead a simple WYSWIYG interface provided. HTML can be directly set via the API although the format is limited to a simple subset of allowed HTML.
Tables are not supported but links are.

These changes will be part of the next feature release, so I'll therefore close this off.
This was also related to #2354.