Improve description/statusReason rendering

[hugo-vrijswijk]

When the description/statusReason is filled, the report shows it when opening the mutant. Oftentimes this is filled with information from the test framework, such as an exception, diff or otherwise. A lot of frameworks fill this information with ansi-codes for colored text. For Stryker4s specifically, this will have a list of exceptions, delimited by newlines.

This means that a nicely reported error like this:

Ends up looking like this in the report:

Which is a lot less readable.

I think we can do two things to fix this:

• Render newlines (and tabs?) properly
• Render ANSI codes. Something like ansi_up could work, but it should be fairly easy to make something ourselves