Adding copyright information to the dependency information

[colm-quinn]

Looking at https://snyk.docs.apiary.io/#reference/dependencies/dependencies-by-organization/list-all-dependencies, the copyright array is returned with each dependency, but that information is not exposed in the data returned by the client.

Would it be possible to extend the Dependency manager to include that information? I'd be happy to add support if it was just a matter of extending the model, but I havne't managed to create a debuggable version of the client on my side to evaluate what changes would be required.

For now, I'm just using the client.post to workaround the issue.