Implement 'processAssociation' in utils

[asishallab]

Create a correct Zendro association definition. See this spec.

Open questions

We might have to parse the associated data model definition to get information about:

• reverseAssociation
• implementation: Where is the foreign-key stored.
• type of association: one-to-many, one-to-one, many-to-one, many-to-many

Implementation sketch for associations

First, process the JSON Schemas and declare "forward" one-to-one and one-to-many associations. Put the declared "forward" associations into a dictionary.

Second, process the forward associations and declare the reverse associations required by Zendro.

This implies that the translator processes all schemas in a single go.

Differentiate between one-to-many and many-to-many

This step will involve manual curation.