Draft: Add JiHu merged MRs report

Summary

Create a summary of the merged MRs with JiHu contribution label for the current milestone

Action items

• (If applicable) Add documentation to the handbook pages for Triage Operations =>
• (If applicable) Identify the affected groups and how to communicate to them:
  • /cc @person_or_group =>
  • Relevant Slack channels =>
  • Week-in-review

References

Relates to https://gitlab.com/gitlab-org/quality/team-tasks/-/issues/950