Add bot functionality like the Jira plugin

[matthewbirtch]

As a user I'd like to be notified of updates to documents I've worked on and comments on documents I've worked on or been tagged in.

Propose we add functionality to the Confluence plugin to have a bot just like the Jira plugin that could notify users of these kinds of updates.

[catalintomai]

This a significantly expensive feature request. We plan to add a Confluence app to our portfolio.