BPMN: Auto populate DMN options from BPMN

[hmatt1]

In a BPMN, when adding a Business Rule Task for a DMN, it would be really great if there was an auto-populated drop down to select a DMN Model name and Decision name from DMNs in the project. It then would automatically fill out the namespace field. This makes it easy because currently we have to copy these values from a DMN.

We need to document and describe this feature request, and hopefully contribute a fix for it to https://github.com/kiegroup/drools-wb