Report Generation

### Current Behavior

At the moment, it doesn't appear that the Dependency-Track UI offers users the ability to generate reports.

### Proposed Behavior

It would be very useful if one could generate and export a CSV report. It would also be useful, though not necessarily a requirement, if a PDF could be exported.

Reporting at the levels of a specific project and the portfolio of all projects would be desired. The contents of the various dashboards are great, so they would presumably form the options for report metrics.

### Checklist

- [X] I have read and understand the [contributing guidelines](https://github.com/DependencyTrack/dependency-track/blob/master/CONTRIBUTING.md#filing-issues)
- [X] I have checked the [existing issues](https://github.com/DependencyTrack/frontend/issues) for whether this enhancement was already requested