Resolve "Project fetch statistics API (HTTP only)"

What does this MR do?

The API get projects/:id/statistics allows user with write access to the repository to obtain the number of HTTP fetches for the last 30 days.

What are the relevant issue numbers?

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• Tests added for this feature/bug
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
• Security reports checked/validated by reviewer

Closes #42086 (closed)