CrossRefTabWidget: EntityLinks not possible whithout passing entity response

[VincentKneip]

Currently, the CrossRefTabWidget executes a query and passes the extracted cross references of the queried entity as strings to the CrossRefTabPresentation widget.

This causes a problem of not being able to add labels or links to the values listed under cross references in the entities' response. Within the OLS4 v2 api, this information is often provided in the response at the key linkedEntities.

Below you can see a comparison of the current situation and the enhanced version (from EBI) for the term iri http://www.ebi.ac.uk/efo/EFO_0009644:

current (no links, no labels)	enhanced (links, labels, badges) (view at EBI's page here)

CrossRefTabPresentation would have to receive the whole response to add this functionality, which we want to avoid though as it would force users of our service to deal with our model objects instead of simple string values.

I would therefore suggest adding an alternative Presentation-widget which receives the whole entity response, but is not publicly usable, so we hide the model architecture from users, but still provide the functionality for the CrossRefTabWidget. Users could then decide to either use CrossRefTabWidget, including the functionality, or CrossRefTabPresentation (if the cross references should be provided manually), not including the functionality

[VincentKneip]

After discussing, we decided to do the following:

• internally pass the whole entity object
• allow for other users to pass information beyond the curie in the following format (same as OLS3-API format):

  {
      database: string,
      id: string,
      description?: string,
      url?: string
  }