Output console lines and make it possible to link to them

[simonsan]

It would be useful to show the lines in the console and let us link to them like in a review of a PR. It could get most useful I guess, when we activate clang-tidy checks to directly link to the problems or even make kind of a todo list in kevin and output it directly in the PR.

Here is an example.

[TheJJ]

very related to #22