Add corner_radius to sv.LabelAnnotator to handle roundness of label edges.

[xaristeidou]

Description

Implements #1027

sv.LabelAnnotator has a new attributre corner_radius.

A new custom method draw_rounded_rectangle has been added using almost same arguments with cv2.rectangle but using the new corner_radius attribute.

Examples using corner_radius = 8 | 20, are attached below:

List any dependencies that are required for this change.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

How has this change been tested, please provide a testcase or example of how you tested the change?

Google Colab ready for testing:
https://colab.research.google.com/drive/1sHdjb1bg8aGekj7uaSNQ80VqhgTzASOs?usp=sharing

Any specific deployment considerations

When initializing sv.LabelAnnotator() the corner_radius can be specified using int values.

Docs

• Docs updated? NO. Update needed

[SkalskiP]

Hi @xaristeidou 👋🏻 I made small API changes (nothing serious), and we are ready to merge! Thanks a lot for coming up with the idea and executing it!