As Developer, add BCs and SDTM Specializations to the /mdr/products endpoint response

[OGarcia11]

Description

• As Developer, I want BC and SDTM specializations products added to /mdr/products endpoint response.

Acceptance criteria

• The products endpoint provides links to the list of latest biomedical concepts and dataset specializations

• The products endpoint returns the following payload (cosmos links added):
  {
  "_links": {
  "data-analysis": {}
  ...
  "cosmos": {
  "_links": {
  "biomedical-concepts": {
  "href": "/mdr/bc/biomedicalconcepts",
  "title": "Biomedical Concepts (latest version)",
  "type": "Biomedical Concept List"
  },
  "sdtm-dataset-specializations": {
  "href": "/mdr/specializations/sdtm/datasetspecializations"
  "title": "SDTM Dataset Specializations (latest version)",
  "type": "SDTM Dataset Specialization List"

    }
  }
  

  }