Allow filtering for internal components in SBOM export

### Current Behavior

Currently when doing an SBOM Export all project components are included in the export.

However DT has an attribute of components identifying them as being internal.

In some contexts it makes most sense to exclude such components from the SBOM.
E.g. when providing the SBOM for OSS component License Validation by the legal department.
In other contexts where the SBOM is intended to declare OSS components and not list any vendor proprietary components.

### Proposed Behavior

We suggest that a variant of the SBOM export function is added where the SBOM does not include the components marked Internal.

### 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/dependency-track/issues) for whether this enhancement was already requested