ShapeShifter for YOLOv3

[dxoigmn]

What does this PR do?

python -m mart experiment=COCO_YOLOv3_ShapeShifter trainer=gpu

This PR depends upon a lot of other PRs so I'm waiting for those PRs to be merged.

• Merge Universal Perturbations #132
• Merge Add callback that freezes specified module #141
• Merge General ImageVisualizerCallback #156

Type of change

Please check all relevant options.

• Improvement (non-breaking)
• Bug fix (non-breaking)
• New feature (non-breaking)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Testing

Please describe the tests that you ran to verify your changes. Consider listing any relevant details of your test configuration.

• Test A
• Test B

Before submitting

• The title is self-explanatory and the description concisely explains the PR
• My PR does only one thing, instead of bundling different changes together
• I list all the breaking changes introduced by this pull request
• I have commented my code
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have run pre-commit hooks with pre-commit run -a command without errors

Did you have fun?

Make sure you had fun coding 🙃

[dxoigmn]

Closing in favor of #182.