Add sorting functionality for group/project members

What does this MR do?

This MR adds sort functionality to group/project members list.

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

No.

Why was this MR needed?

This MR helps the user to manage and find users of a group/project fast. It also improves UX.

Screenshots (if relevant)

Before

After

Does this MR meet the acceptance criteria?

• CHANGELOG entry added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #21622 (closed)

Closes #23573 (closed)