Mtschesche/safe images

[MatteoTschesche]

This PR introduces taking images if the target object is not found. This can be used to faster generate a dataset for retraining. Also possible in games. We need to check if saving those images negatively impacts the loop time before merging.

Future work:

• Seperate those images in folders for "searching" the object and "while_VS" to easier find the most important images for retraining.
• A confidence threshold could be used when storing those images to also retrain if the object was found with a bad confidence.