Merged 2.4.3.dev2(Attach MulticlassNMSOBB, update URL)

[ueno-hiroshi002]

Pull Request Description:

• Attach MulticlassNMSOBB in edge-mdt-cl-dev, and add unittests.
• Updated repository URLs in README.md.

Checklist before requesting a review:

• I set the appropriate labels on the pull request.
• I have added/updated the release note draft (if necessary).
• I have updated the documentation to reflect my changes (if necessary).
• All function and files are well documented.
• All function and classes have type hints.
• There is a licenses in all file.
• The function and variable names are informative.
• I have checked for code duplications.
• I have added new unittest (if necessary).