user added components shall not be deleted after SBOM import

[Mtothexmax]

Current Behavior

When one manually adds a component and then uploads an SBOM the manually added components are deleted.

Proposed Behavior

Do not delete manually added coponents after SBOM import or at least flag them as manually added so one can back them up over the API

Checklist

• [X] I have read and understand the contributing guidelines
• [X] I have checked the existing issues for whether this enhancement was already requested