Add non-tracked component vulnerability analysis

The `/v1/vulnerability/component/{ident}` endpoint allows the specifying a hash or component uuid to retrieve the vulnerabilities.

Enhance this endpoint to support Package URL.

Also, enhance this endpoint to support non-tracked components - or components that are not currently in the database. If a PURL is specified and the component is not tracked, this enhancement should use existing logic to perform a scan.

The cache manager should be used to cache responses if the component is not tracked.