CloudHarness Django integrate client and role creation/checking with CH deployment application roles

In CH value.yaml we can set up client roles (see https://github.com/MetaCell/cloud-harness/blob/develop/docs/model/ApplicationAccountsConfig.md)

It would be nice is these roles can be used for CH Django based apps instead of setting the roles in the settings.py see https://github.com/MetaCell/cloud-harness/blob/27d7d721c81ba61dd6cfc01ca178d47fc65ebbfa/tools/cloudharness_utilities/application-templates/django-app/backend/__APP_NAME__/settings.py#L153

implementation wise we should think about how to map a role to Django superuser and staff users types

Read docs/model/ApplicationAccountsConfig.md and the CH value.yaml role configuration, then inspect tools/cloudharness_utilities/application-templates/django-app/backend/__APP_NAME__/settings.py around line 153. Establish how deployment application roles should be consumed by Django apps and how they map to superuser and staff users; done means the role setup no longer needs to be duplicated in settings.py.

Written by the indexing model from the issue text.