Add Aggregate F1 Scores to Object Detection

[czaloom]

Feature Request

• Add macro average F1 score
  • F1 averaged over all labels.
• Add weighted average F1 score
  • F1 average weighted by label counts.

New Metrics

{
    "type": "MacroAverageF1",
    "value": 2 / 3,
    "parameters": {
        "iou_threshold": 0.6,
        "score_threshold": 0.0,
    },
}

{
    "type": "WeightedAverageF1",
    "value": 2 / 3,
    "parameters": {
        "iou_threshold": 0.1,
        "score_threshold": 0.0,
    },
}