DMN support for BusinessRuleTask

With coming KIE DMN modules there is a need to provide support for decision service in BusinessRuleTask next to currently available DRL based rule evaluation.

It should support direct evaluation based on input parameters:

• namespace/package - required parameter
• DMN model name - required parameter
• decision name - optional parameter and if not given all decisions will be evaluated

It should also support data input and output handling to be able to map process variables as input to the decision service and output mapping of provided decisions to process variables.