Test Drive Camunda 8 to determine what needs to be done for migration from Camunda 7.

[kaladay]

This is a child issue of #223.

Spin Up a Camunda 8 instance and attempt to get it working with our projects (workflow, registry, etc..).
Record the results and provide feedback for problems and possible solutions.

Camunda 8 will be spun up inside of mod Camunda.

Feel free to resolves this by creating issues that if solved would perceivably get Camunda 8 working within mod-camunda.