Split endpoint for retraining and adding of new components

[t99-i]

User story

1. As a {user}
2. I want / need {to provide a missing matching components and add new components}
3. So that {I can improve the search in the future}

Acceptance criteria

• post end point for user suggestions (retraining) is implemented and input could be used for retraining the ML-model
• post end point for adding new component is implemented

Definition of done

• Code has been reviewed by developer
• Code has been reviewed by the responsible developer Team (Frontend/Backend)