Add a feature to make the display of landing page tabs configurable

@yas, please review this patch. I've added two things with this patch

1. In admin/config/services/cloud/settings, I added the ability to configure which tabs can be turned off. I didn't want to create an entire new admin configuration form just for this, so I used cloud_orchestrator_form_cloud_admin_settings_alter to alter in the checkboxes.
2. In DashboardController.php, slightly refactored the code to make it easier to maintain.

@baldwinlouie

Thank you for the great patch. It looks good to me. I'll merge the patch to 6.x, and close this issue as Fixed.

@yas, please review the hotfix at https://git.drupalcode.org/project/cloud_orchestrator/-/merge_requests/7...

During testing, I realize I needed to add defaults to config/install/cloud_orchestrator.settings.yml

@baldwinlouie

Thank you for the hotfix. I'll merge the patch to 6.x, and close this issue as Fixed.

Automatically closed - issue fixed for 2 weeks with no activity.