Merge conflict historical on GitLab API
<!--IssueSummary start-->
<details>
<summary>
Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards.
</summary>
- [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=383266)
</details>
<!--IssueSummary end-->
# Purpose
We are working to create a metrics to measure merge conflict data. Therefor we need to access the data as below from GitLab API.
Data needed are including
- How many time that we have merge conflict in each mrs?
- When the merge conflict is happened and when is solved, like a merge conflict events?
issue