(Scanner) Improve error handling for DepWalker #504
Description
Current implementation of DepWalker ignore most of the errors happening (sometimes for good reason) but this can hide issues and lead to a complicated debugging experience when a regression occur.
- scanDirOrArchiveEx: catch clause is ignored
- enrichDependency + enrichDependencyVersion: catch clause is ignored
In the beginning we probably need a way to keep and return them in the API.