New metric: Cluster Accuracy

[SkafteNicki]

What does this PR do?

Fixes #2767

Before submitting

• Was this discussed/agreed via a Github issue? (no need for typos and docs improvements)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure to update the docs?
• Did you write any new necessary tests?

PR review

Anyone in the community is free to review the PR once the tests have passed.
If we didn't discuss your PR in Github issues there's a high chance it will not be merged.

Did you have fun?

Make sure you had fun coding 🙃

---

📚 Documentation preview 📚: https://torchmetrics--2777.org.readthedocs.build/en/2777/

[Borda]

seems there is some problem with package resolution, and it tries to download so many combinations that it crashes for no space left on the machine...

[Borda]

it is strange as it tries to install PT 2.6?

#8 24.19 Collecting torch_linear_assignment<0.0.3,>=0.0.2 (from -r /requirements/clustering.txt (line 4))
#8 24.20   Downloading torch_linear_assignment-0.0.2.tar.gz (12 kB)
#8 24.20   Installing build dependencies: started
#8 25.15   Installing build dependencies: finished with status 'error'
#8 25.15   error: subprocess-exited-with-error
#8 25.15   
#8 25.15   × pip subprocess to install build dependencies did not run successfully.
#8 25.15   │ exit code: 1
#8 25.15   ╰─> [6 lines of output]
#8 25.15       Looking in indexes: https://pypi.org/simple, https://download.pytorch.org/whl/cu121/, https://download.pytorch.org/whl/test/cu121
#8 25.15       Collecting setuptools
#8 25.15         Using cached setuptools-75.7.0-py3-none-any.whl.metadata (6.7 kB)
#8 25.15       Collecting torch>=1.12.0
#8 25.15         ERROR: HTTP error 403 while getting https://download.pytorch.org/whl/test/torch-2.6.0-cp311-cp311-manylinux1_x86_64.whl (from https://download.pytorch.org/whl/test/cu121/torch/)
#8 25.15       ERROR: Could not install requirement torch>=1.12.0 from https://download.pytorch.org/whl/test/torch-2.6.0-cp311-cp311-manylinux1_x86_64.whl because of HTTP error 403 Client Error: Forbidden for url: https://download.pytorch.org/whl/test/torch-2.6.0-cp311-cp311-manylinux1_x86_64.whl for URL https://download.pytorch.org/whl/test/torch-2.6.0-cp311-cp311-manylinux1_x86_64.whl (from https://download.pytorch.org/whl/test/cu121/torch/)
#8 25.15       [end of output]
#8 25.15   
#8 25.15   note: This error originates from a subprocess, and is likely not a problem with pip.
#8 25.38 error: subprocess-exited-with-error

[Borda]

the used package for testing has pending sklearn bump in aeon-toolkit/aeon#2482

[justusschock]

should we add this to changelog?