XsensIMU → IMU Relation

File in RobotAPI/drivers/XsensIMU	Includes file in RobotAPI/drivers/XsensIMU/IMU
IMU / IMUDevice.h	Xsens / Xsens.h
IMU / IMUDevice.h	Xsens / XsensMTiModule.h
XsensIMU.h	IMU.h