Add Slack integration to search wiki and share link

[jo-chemla]

Hi there,
First of all, thanks for the great utility, wikijs is an amazing tool for knowledge management across an org. I know there is a module to use Slack as an auth provider for wikijs, which is great.

I'd like to know whether a slack app does exist or could be created, for searching through the wiki.js pages, and returning a link to a page selected by user. The flow could be like other slack apps, user starts typing /wiki search my-query, which would list the matching pages - the way one can shuffle giphy results for example - and typing Enter would post the link to slack with the page link, title, description and preview. Could be very helpful to redirect users to existing doc!
Best,