Unable to include compiler error messages in commit messages due to line length limit

[arbrauns]

It can sometimes be useful to include compiler output in commit messages, but this is close to impossible due to the commit line length limit of 80 (and inserting your own linebreaks would kind of defeat the purpose of including the output verbatim).

The custom gitlint rule responsible for this only has exceptions for HTTP(S) URLs and Signed-Off-By lines. It might be nice to add a rule that e.g. allows blocks of text delimited by ``` (markdown code blocks) to exceed the line length limit.