Add <system-out> to unit test detail screen

[corani]

For unit test that fail, the failure output can be seen in the detail screen, after clicking on the unit test.

However, there are several other types of output that can be present even for passing unit tests. One of these is , which is used in the output generated by ABAP-Unit.

Please add this missing content to the unit test detail screen, and perhaps mark testcases with additional output on the overview screen.

JUnit XSD: https://github.com/junit-team/junit5/blob/master/platform-tests/src/test/resources/jenkins-junit.xsd