Add new annotation type RotatedBbox

[wonjuleee]

Summary

Add a new RotatedBbox annotation type for detection_rotated task.
This provides from_polygon and as_polygon methods for converting set of coordinates to (cx, cy, w, h, r).

This updates the RoboflowYoloObb behavior as a detection_rotated task.

How to test

Checklist

• I have added unit tests to cover my changes.​
• I have added integration tests to cover my changes.​
• I have added the description of my changes into CHANGELOG.​
• I have updated the documentation accordingly

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.
• I have updated the license header for each file (see an example below).

# Copyright (C) 2024 Intel Corporation
#
# SPDX-License-Identifier: MIT

[codecov]

Codecov Report

Attention: Patch coverage is 90.27778% with 7 lines in your changes are missing coverage. Please review.

Project coverage is 81.01%. Comparing base (44cc56a) to head (6f79643).
Report is 34 commits behind head on develop.

Files	Patch %	Lines
src/datumaro/components/annotation.py	88.13%	7 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1459      +/-   ##
===========================================
+ Coverage    80.85%   81.01%   +0.15%     
===========================================
  Files          271      272       +1     
  Lines        30689    31215     +526     
  Branches      6197     6286      +89     
===========================================
+ Hits         24815    25289     +474     
- Misses        4489     4511      +22     
- Partials      1385     1415      +30     

Flag	Coverage Δ
ubuntu-20.04_Python-3.10	80.99% <90.27%> (+0.14%)	⬆️
windows-2022_Python-3.10	80.98% <90.27%> (+0.15%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.