Add scan object to report

What does this MR do?

This MR adds support for the scan object added to the common report by Add Scan object with scanner and type to report

"scan": {
  "scanner": {
    "id": "kubesec",
    "name": "Kubesec",
    "url": "https://github.com/controlplaneio/kubesec",
    "vendor": {
      "name": "GitLab"
    },
    "version": "2.5.0"
  },
  "type": "sast"
}

What are the relevant issue numbers?

gitlab-org/gitlab#202053 (closed)

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated for GitLab EE, if necessary
• Documentation created/updated for this project, if necessary
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Job definition updated, if necessary
  • Auto-DevOps template
  • Job definition example
  • CI Templates
• Conforms to the code review guidelines
• Conforms to the Go guidelines
• Security reports checked/validated by reviewer