Add artifact tests

[SamuraiAku]

Need unit tests to verify that artifacts are being added to the SBOM correctly. This will require adding an artifact to one or more of the Dummy packages.

For proper coverage we should have the following types of artifacts

• One that works for all host platforms
• One that targets the CI host platform (linux, x86 right?) and another platform
• One that targets a non CI platform, to verify it doesn't get downloaded at all.
• A lazy artifact