Project Sidebar: Split CI/CD into CI/CD and Operations

What does this MR do?

Split current project sidebar entry CI/CD into CI/CD and Operations

Are there points in the code the reviewer needs to double check?

• Documentation probably, should we do new screenshots?
• Logic on when to show the Operations entry.

Screenshots (if relevant)

Spec	Static	Behaviour
		operations-entry

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• [n/a] API support added
• Tests added for this feature/bug
• Review
  • Has been reviewed by UX
  • Has been reviewed by Frontend
  • [n/a] Has been reviewed by Backend
  • [n/a] Has been reviewed by Database
• Conform by the merge request performance guides
• Conform by the style guides
• Squashed related commits together
• Internationalization required/considered
• End-to-end tests pass (package-and-qa manual pipeline job)

What are the relevant issue numbers?

Closes #43673 (closed)