As a developer

I want to enhance SO macro flow

So that OOF can be integrated with SO macro flow.

In the existing ExecuteBuildingBlock BPMN, a new subprocess EnrichGBB is added. 

In the SO request if  Homing_Solution value is true then flow will execute EnrichGBB process to find the optimisation solution. 

New EnrichGBB BPMN:

The purpose of the this bpmn is to preparing request and trigger OOF API. Also, handle OOF async response. Right now we are preparing OOF request for NSST selection only, going forward we will enhance the code to other solutions like cloud details.