Create corrected PDF

[LittleHelicase]

After the solution was corrected we will need to create the PDF that contains the correction. And if possible the points for every exercise.

[leMaik]

Points for every exercise should be easy by adding some markdown. I'll look into that.

Edit: The current code is weird. Only the solution is added, the task descriptions seem to be missing? Also, there's no option to specify if the correction should be included, so I just added TODOs. 😉