Add license text to BOM export

This enhancement request is created based on https://github.com/DependencyTrack/dependency-track/issues/1990#issuecomment-1270346726

### Current Behavior:
The Json downloaded from DependencyTrack via the API endpoint `/api/v1/bom/cyclonedx/project/{uuid}`, does not contain the license text anymore. The license text is available in the input bom.xml, within DependencyTrack but not in the downloaded Json.

### Proposed Behavior:
There is an option to include license texts in the exported Json. If activated, the exported Json contains the license texts.

Start at the `/api/v1/bom/cyclonedx/project/{uuid}` endpoint and trace how the BOM is exported to JSON. Check how an export option could be exposed and how license text from the input `bom.xml` is represented. Done means the option is available and enabled exports include the license texts.

Written by the indexing model from the issue text.