feat: add new arctic v2.0 models

[dbuades]

This PR introduces the following two newly released models by the Snowflake team:

• name: "Snowflake/snowflake-arctic-embed-m-v2.0"
  revision: "f2a7d59d80dfda5b1d14f096f3ce88bb6bf9ebdc"

• name: "Snowflake/snowflake-arctic-embed-l-v2.0"
  revision: "edc2df7b6c25794b340229ca082e7c78782e6374"

For supported languages, I did my best to translate them to ISO_LANGUAGE_SCRIPT as accurately as possible but there might be some errors. The original list of supported languages can be found in the README.md on their repository.

Checklist

• Run tests locally to make sure nothing is broken using make test.
• Run the formatter to format the code using make lint.

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.

[dbuades]

Results for MTEB(Medical) are in embeddings-benchmark/results#66.

[dbuades]

The test error is unrelated to this PR, it's a gateway time-out for the Hub. A rerun of the action should fix it 👌

[KennethEnevoldsen]

For supported languages, I did my best to translate them to ISO_LANGUAGE_SCRIPT as accurately as possible but there might be some errors. The original list of supported languages can be found in the README.md on their repository.

This is perfectly fine! Sadly Huggingface uses the two-letter codes, which is not as precise.