Add call to CVE CIRCL API to retrieve CVE descriptions

A new service call should be created that binds to the CVE CIRCL API with the URL: https://cve.circl.lu/api/cve/{cveID}, with a real example being https://cve.circl.lu/api/cve/CVE-2010-3333. The only field we need from this API is the description currently, all other fields can be safely ignored.

This data should be cached to reduce the load on public APIs, especially since this information will very infrequently change. This call should be added to the existing service calls to return the descriptive data when a CVE is requested.