Allow filtering project findings by the package ecosystem

### Current Behavior

Thank you for your work on making vulnerability management easier with Dependency Track.
Currently, there is no way to filter findings by the package/component ecosystem (python / npm / golang / deb etc ) in the project findings view.

### Proposed Behavior

I would like to have a feature to be able to filter findings by the package/component ecosystem (python / npm / golang / deb etc ) in the project findings view.
In addition, a column indicating the package/component ecosystem would also be nice.

### 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