Merge branch 'eduardosanz/list-of-permissions' into 'master'

Display a list of permission for a custom role

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/136703



Merged-by: Natalia Tepluhina <ntepluhina@gitlab.com>
Approved-by: Daniel Tian <dtian@gitlab.com>
Approved-by: John McDonnell <jmcdonnell@gitlab.com>
Reviewed-by: Natalia Tepluhina <ntepluhina@gitlab.com>
Reviewed-by: Eduardo Sanz García <esanz-garcia@gitlab.com>
Co-authored-by: Eduardo Sanz García <esanz-garcia@gitlab.com>