AT

In the platform, move legacy implementation classes into a dedicated module, separated from the DMN API.

Reasoning

The current Java DMN engine implementation will be replaced by integrating a Scala DMN engine. The API is supposed to stay as-is to still provide compatibility. This API module will be used by the platform wrapper for the Scala DMN engine (CAM-12920) as well to keep the specific implementation transparent to the platform itself. As the current Java implementation will potentially become a legacy implementation (CAM-12925), this should be moved to a separate module using the then cleared-up API module.