Weightslab detection usecase

[guillaume-byte]

Allow Weightslab to manage the detection use case:

• Include dict type and bounding boxes coordinates as predictions or labels in the SDK
• Add to UI bounding boxes rendering from labels and predictions (https://github.com/GrayboxTech/weights_studio/issues/83)

[guillaume-byte]

Check if predicted bounding boxes works without cls, i.e., in 2d:

• xyxy
• xyxyc1 (bin)
• xyxyc1c2cn (mlt cls)
  and
• xywh ...etc