tutorialkit: custom directive inheritance #4
Description
TutorialKit supports providing custom configuration parameters through the custom attribute in the lesson's frontmatter: https://tutorialkit.dev/reference/configuration/#custom
However, unlike other directives, such as previews, terminals, this is one could only be set for a lesson, not for a part, chapter, or globally.
In our case, we use custom to specify the working directory for terminals and will probably use for other stuff.
It would be nice to define it at an upper scope level (chapter, part) and not copy-paste for each lesson.