New feature of moving straight line with Kuka API

[Chunting]

Make the robot move a straight line using Kuka API, and plot the data in Kuka frame.

• Look through the Kuka documents to find the relevant API;
  See KUKA Sunrise Workbench 1.11, 15.6.3, LIN;
  Structure of a robot applicaiton, P352;

• Add the Cartesian control mode to flatbuffer::ArmState;

• Change the java file to add this new feature, reinstall the grl driver in the sever;

• Plot the new data in Kuka frame;