Add codesage-large-v2

[Aradhye2002]

mteb/models/codesage_models.py

Fixes #2020

Code Quality

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

Testing

• 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.

[KennethEnevoldsen]

Thanks for the PR @Aradhye2002. It seems like there are still a few things in the checklist missing notably the missing import of the model, means that it is not discoverable using mteb.get_model(name)

[Aradhye2002]

Thank you @KennethEnevoldsen, for the suggestions! I'll try my best to resolve the comments.

[Samoed]

Can you add small and medium versions too?

[Aradhye2002]

Can you add small and medium versions too?

Done

[Samoed]

Can you format your code?

[Aradhye2002]

Can you format your code?

Done.