Incorrect description for `count` input/output type

[Lee Ping Ng]

count which is currently an output from dabble.bbox_count should just be an int type, but the description in RTD is incorrect:

count (List[int]): A list of integers representing the count of a pre-selected object (for example, ‘people’) detected in each frame through bboxes.

[Lee Ping Ng]

It could have been the initial intention to present it as a list to show different counts for different classes, but with the update to draw.legend, it was changed to count across all bboxes for simplicity. Going forward with new nodes coming out in v1.2 which will make use of count, suggest retaining it as an int type and updating the docs.

Here, it shows count is a single int of 3 even with 2 classes, "dog" and "person".

'bboxes': array([[0.31895882, 0.6725785 , 0.5876959 , 0.97450596],
        [0.44654298, 0.07115207, 0.7607977 , 0.7644112 ],
        [0.22748163, 0.04981984, 0.50799876, 0.6592544 ]], dtype=float32),
 'bbox_labels': array(['dog', 'person', 'person'], dtype='<U6'),
 'bbox_scores': array([0.72365254, 0.63344693, 0.39939374], dtype=float32),
 'count': 3}

[Lee Ping Ng]

This has been updated in the pull request for the CSRnet node. Once it is merged into dev, this issue will be closed.