Re add accidentally removed NJointHolonomicPlatformRelativePositionController for platform unit

source/RobotAPI/components/units/RobotUnit/RobotUnitModules/RobotUnitModuleUnits.cpp

@@ -314,6 +314,19 @@ namespace armarx
                         );
             ARMARX_CHECK_EXPRESSION(ctrl);
             unit->pt = ctrl;
+
+            NJointHolonomicPlatformRelativePositionControllerConfigPtr configRelativePositionCtrlCfg = new NJointHolonomicPlatformRelativePositionControllerConfig;
+            configRelativePositionCtrlCfg->platformName = _module<RobotData>().getRobotPlatformName();
+            auto ctrlRelativePosition = NJointHolonomicPlatformRelativePositionControllerPtr::dynamicCast(
+                                            _module<ControllerManagement>().createNJointController(
+                                                "NJointHolonomicPlatformRelativePositionController", configName + "_RelativePositionContoller",
+                                                configRelativePositionCtrlCfg, false, true
+                                            )
+                                        );
+            ARMARX_CHECK_EXPRESSION(ctrlRelativePosition);
+            unit->pt = ctrl;
+            unit->relativePosCtrl = ctrlRelativePosition;
+
             unit->platformSensorIndex = _module<Devices>().getSensorDevices().index(_module<RobotData>().getRobotPlatformName());
             //add
             addUnit(std::move(unit));