add study report subclass: "study fulfills a legal obligation"

[stap-m]

@han-f @l-emele The descriptor "study fulfills a legal obligation (e.g. it is the projection under the MMR or part of the NECP)" came from you. Would a solution be to add a scenario subclass instead of a study descriptor, e.g. legal obligation scenario?

I would rather see this as a subclass of study report. E.g. the projections reports are study reports that contain scenarios and fulfil legal obligations.

Originally posted by @l-emele in OpenEnergyPlatform/oekg#19 (comment)

[l-emele]

A definition proposal almost follows directly from the issue title: A X is a study report that fulfills a legal obligation. Some ideas for the label:

• legally mandatory study report
• legally obligatory study report

However, I am not yet happy with these labels. Any better ideas, @han-f , @stap-m ?

[stap-m]

What about legally demanded study report?
A X is a study report that is created beacause of a legal obligation. To underline that the creation itself is the legal obligation.
I am also ok with legally mandatory study report or legally obligatory study report though. We can change the label later, if we find something better...

[l-emele]

I am fine with you last definition proposal. @han-f : Do you agree, too?

Regarding the labels: all three proposals are equally clumsy. 😐

[han-f]

I also agree with the latest definition proposal.
As for the labels: how about: study report due to a legal obligation or study report due to legislation ?