new measurement script and filename decoding

See merge request ipa325_public/pitasc_components/ilc!7

I was unable to correct for evalution of the current date

usb_app

points to a bigger issue not adressed here

change path's and plot z-axis
roslaunch ilc bringup_microsim.launch & rosrun cppitasc file_reader ilc apps/rob_ilc_lin_test.xml

use literal '{rospkg ilc}' for path to ilc
use literal '{time %F} for current date (cf. std::sftime)