added script to (recursively) remove *.bz data files from a directory - they are often a huge bunch of junk taking away space and slowing down the processing

Signed-off-by: LK <LK@uni>
added script modemPlotResponse.py to utils

Signed-off-by: LK <LK@uni>
improved read/write speed in processing by circumventing loadtxt. Iterating over lines of Filehandler instead. Reduced file size by formatted printing

Signed-off-by: LK <LK@uni>