Annotate unique script errors in cicd

[aronand]

As stated in #29 (comment):

Preliminary script validation step has been implemented in the branch 46-implement-a-scene-manager.

One thing that stands out about the solution is that if a file that is very interlinked (e.g. core/log.gd) has script errors, this error will show up in most scripts. A potential improvement idea for the future regarding this is to run the validations via Python for example, and to store the output. Once all checks have completed, sift through the output and only annotate the unique ones.