sig#987 - Enhance API by new parameter displayTechnicalUser

[MaximilianHauer]

Description

Implement a new parameter that defines if the technical user details created for an app/service should be visible for the subscriber.
This configuration will be set in the app release process.

This boolean defines if the subscriber is able to see the technical user in the technical user management section later on.

add "displayTechnicalUser": "boolean" to be saved in the following api
/api/apps/appreleaseprocess/createapp
/api/services/servicerelease/addservice

add "displayTechnicalUser": "boolean" to be provided in the following api
/api/apps/{appID}
/api/services/{serviceId}

Acceptance Criteria

• There should be a new boolean parameter called "displayTechnicalUser" added to the app release process API endpoint /api/apps/appreleaseprocess/createapp.
• There should be a new boolean parameter called "displayTechnicalUser" added to the service release process API endpoint /api/services/servicerelease/addservice.
• The "displayTechnicalUser" parameter should be included in the response of the API endpoints /api/apps/{appID} and /api/services/{serviceId}.

Additional Information