Add health status filter on issue boards

What does this MR do and why?

This adds the ability to filter issues based on the health status on issue boards.

Issue: #212473 (closed)

Screenshots or screen recordings

Screen_Recording_2022-10-11_at_15.55.05

How to set up and validate locally

Note: Health Status requires an Ultimate license!

1. Select any issue and set the Health Status of that issue (right hand sidebar on the issue page)
2. Go to a Group or Project where the issue is in
3. Go to Issues -> Boards
4. Select the Health filter in the search and use the Health status you used for the issue. The issue should appear.
5. Example URL: http://gdk.test:3000/groups/gitlab-org/-/boards?health_status=onTrack

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.