If there's a compilation error in a meta test, inform the teacher

[mauricioaniche]

Right now, if there's a compilation error due to a badly written meta test, Andy just considers that meta test to fail. That's not correct. If the meta test makes the code to not compile, we should alert the teacher right away.

If during EXAM mode (hopefully never), just show a message. In any other mode, paste the entire meta test + compilation error, so it gets easier to identify the problem.

Changes most likely should happen here: https://github.com/SERG-Delft/andy/blob/main/andy/src/main/java/nl/tudelft/cse1110/andy/execution/metatest/library/LibraryMetaTest.java

[AtillaColak]

Can I work on this as well?

[martinmladenov]

I just assigned to the issue. Thanks! Let us know if you have any questions.