Py-ssvad-metrics

Changelogs:
- Bug fix when evaluating using only traditional criteria

Changelogs:
- Added visualizer module
- Added build sdist
- Added samples

Changelogs:
- Revamp calculation from bbox-based into mask-based
- Added handlers for various input types
- Added X axis sorting on all AUC calculation
- Updated README.md
- Added more test cases

Changelogs:
- Updated README.md
- Refactor metrics calculation into accumulator style
- Added `accumulated_evaluate`