Fixes #2109

This adds ModelMeta's for:

• https://huggingface.co/sentence-transformers/static-retrieval-mrl-en-v1
• https://huggingface.co/sentence-transformers/static-similarity-mrl-multilingual-v1

I'm running evaluations for these for https://github.com/embeddings-benchmark/results now.

Code Quality

• Code Formatted: Format the code using make lint to maintain consistent style.

Documentation

• Updated Documentation: Add or update documentation to reflect the changes introduced in this PR.

Testing

• New Tests Added: Write tests to cover new functionality. Validate with make test-with-coverage.
• Tests Passed: Run tests locally using make test or make test-with-coverage to ensure no existing functionality is broken.

Adding a model checklist

• I have filled out the ModelMeta object to the extent possible
• I have ensured that my model can be loaded using
  • mteb.get_model(model_name, revision) and
  • mteb.get_model_meta(model_name, revision)
• I have tested the implementation works on a representative set of tasks.

• Tom Aarsen