How can I add a section to the admin/config route and populate it with my own modules? In Drupal 7 it was easy, but I can't figure it out now in Drupal 8. The closest I can get is adding my modules to the Configuration Menu List that appears in the sidebar.
module.admin_settings: title: 'Module Admin Title' description: 'Module Admin Desc.' route_name: my_module.my_module_settings parent: system.admin_config