Code List Config same_as field not serialised to CSV-W

[GDonRanasinghe]

When the user specifies a same_as relation between a concept in their new code list and an existing concept defined elsewhere, the information is not serialised into the code list CSV-W.

We need to make sure that the same as relationship is serialised correctly into the CSV-W. This means adding the column to the CSV file as well as adding the owl:sameAs relationship to the column definition.

Refactor behave tests in cube feature.

[GDonRanasinghe]

@robons I've updated the effort in this ticket from 3 to 5 as this involved an additional task - refactoring behave tests in the cube feature. I have refactored all the tests in the cube feature.

[robons]

@GDonRanasinghe @canwaf has reported that this bug still exists. The same as field isn't actually being written to the CSV output file. Can you take another look fairly urgently, please?

[canwaf]

This is an example of it not serialising the same_as provided in a concept scheme. https://github.com/GSS-Cogs/family-climate-change/tree/master/datasets/Forestry-Research-Forestry-Statistics-2022-Carbon

[canwaf]

Scoring: Impact is high: the functionality is not accessible and there is no workaround. Probability is moderate: users who want mixed-concept schemes will be impacted, which account for large number of datasets but not the majority.

This makes this bug critical.