Newmetric: ProcrustesDisparity

[SkafteNicki]

What does this PR do?

Fixes #2691

Before submitting

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• Did you make sure to update the docs?
• Did you write any new necessary tests?

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📚 Documentation preview 📚: https://torchmetrics--2723.org.readthedocs.build/en/2723/

[codecov]

Codecov Report

Attention: Patch coverage is 87.50000% with 8 lines in your changes missing coverage. Please review.

Project coverage is 69%. Comparing base (c2c68b6) to head (5069f15).
Report is 1 commits behind head on master.

Additional details and impacted files

@@          Coverage Diff           @@
##           master   #2723   +/-   ##
======================================
  Coverage      69%     69%           
======================================
  Files         329     334    +5     
  Lines       18086   18152   +66     
======================================
+ Hits        12511   12569   +58     
- Misses       5575    5583    +8