[EE] Resolve "Extract EE specific files/lines for some platform related project views"

CE version: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/19859

Does this MR meet the acceptance criteria?

• Conform by the code review guidelines
  • Has been reviewed by a Backend maintainer
• EE specific content should be in the top level /ee folder
• Conform by the merge request performance guides
• Conform by the style guides
• If you have multiple commits, please combine them into a few logically organized commits by squashing them
• End-to-end tests pass (package-qa manual pipeline job)

What are the relevant issue numbers?

Related to &27 (closed).

Related to https://gitlab.com/gitlab-org/gitlab-ee/issues/6104.