Work Item Quick Action: Set confidentiality

What does this MR do and why?

Add /confidential quick action for work items.

This action marks a work item as confidential, as long as the work item does not have children, or all of its children are already confidential.

Screenshots or screen recordings

Screen_Recording_2023-08-13_at_21.37.21

How to set up and validate locally

1. In rails console, enable the feature flag:

Feature.enable(:krs_mvc)

2. Navigate to your test project.
3. On the left sidebar, select Plan > Issues
4. In the upper-right corner, next to New issue, select the down arrow and then select New objective.
5. Select New objective again.
6. Select Create objective.
7. In the comment box, type /confidential:
8. Save the comment.
9. The Objective should now be marked as confidential:

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.