WIP: Improve group_links groups dropdown

What does this MR do?

Replaces the #group_links groups dropdown with the a new droplab w/ infinite scroll and remote filter plugins.

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

This MR depends on a number of other MRs from the droplab repo.

Why was this MR needed?

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated
• API support 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 #20013 (closed)