ported the .sh script to .ps1

CI_files/runtest.ps1

+# runtests.ps1
+$LOGFILE="log2.txt"
+
+$arguments = "-nodesktop", "-nosplash","-minimize","-wait", "-logfile $LOGFILE","-r","runner_test"
+$Returnvalue = & 'C:\Program Files\MATLAB\R2021b\bin\matlab.exe' $arguments
+
+$mfile = 
+
+CODE=$?
+
+cat $Returnvalue;
+cat $LOGFILE
+
+# It doesnt look as if matlab gives an exitcode upon successfully stopping, and otherwise it just doesnt stop.
+# Would need a catch / try in the test script - if it is called correctly.
+exit Code
+#exit $LASTEXITCODE