added cleanup script for when the run script is aborted before being able to clean up

cleanupRunDirs.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -uo pipefail
+
+# when executed as executable file in "git for windows" bash some things won't work, so always run with prefixed command
+rm -rf /tmp/zeitlaeufer_*;