Support of Spring Boot SBOM actuator endpoint

### Current Behavior

Dependency-Track consumes and analyzes CycloneDX BOMs usually as part of a CI/CD pipeline.

### Proposed Behavior

Spring Boot 3.3.0 introduced a [SBOM actuator endpoint](https://spring.io/blog/2024/05/24/sbom-support-in-spring-boot-3-3) that exposes SBOMs of running applications.

It would be beneficial to analyze SBOMs of running applications in Dependency Track without a build pipeline. Actuator endpoints could be specified in the "Create Project"/"Project Details" dialogue along with authentication parameters and polling frequency.

### 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