🚀 Add VAD dataset

[abc-125]

📝 Description

Added one-class (unsupervised) version of VAD dataset, which contains one category of complex industrial objects.

✨ Changes

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• 🐞 Bug fix (non-breaking change which fixes an issue)
• 🔨 Refactor (non-breaking change which refactors the code base)
• 🚀 New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📚 Documentation update
• 🔒 Security update

✅ Checklist

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[samet-akcay]

Thanks for this great contribution!

[codecov]

Codecov Report

Attention: Patch coverage is 93.22034% with 4 lines in your changes missing coverage. Please review.

Project coverage is 64.52%. Comparing base (6a6a80c) to head (c0a196a).
Report is 13 commits behind head on main.

Files with missing lines	Patch %	Lines
src/anomalib/data/datasets/image/vad.py	90.90%	3 Missing ⚠️
src/anomalib/data/datamodules/image/vad.py	95.00%	1 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (6a6a80c) and HEAD (c0a196a). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (6a6a80c)	HEAD (c0a196a)
integration_py3.10	1	0

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2603       +/-   ##
===========================================
- Coverage   79.07%   64.52%   -14.55%     
===========================================
  Files         314      318        +4     
  Lines       13217    13521      +304     
===========================================
- Hits        10451     8725     -1726     
- Misses       2766     4796     +2030     

Flag	Coverage Δ
integration_py3.10	?
unit_py3.10	64.52% <93.22%> (-0.16%)	⬇️

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