This change adds the capability of filtering and pagination for group
runners, group administrators can search and locate their runners.

This change adds a list of runners to the group runners page. This is a
first iteration that does not include filters and/or pagination for
results.

This change adds the possibility for users to reset their registration
token in their group.

This change add a new page to manage group runners behind the
feature flag runner_list_group_view_vue_ui.

The new page is added to the sidebar menu as CI/CD -> Runners.