Add new file

CI_files/runtest.sh

+# runtests.sh
+LOGFILE=log2.txt
+
+"C:\Program Files\MATLAB\R2021b\bin\matlab.exe" -nodesktop -nosplash -minimize -wait -logfile "$LOGFILE" -r 'runtests';
+CODE=$?
+
+cat "$LOGFILE"
+
+exit $CODE