Log4Shell Hotfix Side Effect Test Case

I wanted to know if any `ClassNotFoundException` or similar unexpected
exception is raised when one applies the CVE-2021-44228 aka Log4Shell
hotfix as recommended [here](

Result: It looks like no exception is bubbling up.

To test this execute the following commands:
./gradlew clean installDist
env JAVA_OPTS=-Xmx64M ./build/install/log4shell-hotfix-side-effect/bin/log4shell-hotfix-side-effect

It will log a bunch of messages and timings and there should be no exceptions.

If the log4j jar file is not patched properly there should be a measurable
delay between the messages (or you might even get an RCE, YMMV).