Group label list page redesign

Design

• Issues and Merge requests links are displayed under the label description.

Delete label

• After clicking Delete icon, it has the modal to confirm with users.

• Copy:

  • For the modal title, Delete ~Discussion?

  • For the modal body, *Discussion* label will be permanently deleted from GitLab.org. This cannot be undone.

  • For the banner, *Discussion* deleted permanently

Delete label	Banner

Group labels

Note: There is a space before the label is because we will implement "prioritized label" on #40593 (moved).

Spec previews

https://gitlab-org.gitlab.io/gitlab-design/hosted/hazel/ce%2339550-group-label-list-redesign-spec-previews/