fix: Added tasks from SEB

[KennethEnevoldsen]

Added all tasks from SEB. I have not added points for these as we discussed not adding points for items which have already been published on.

Checklist for adding MMTEB dataset

• I have tested that the dataset runs with the mteb package.
• I have run the following models on the task (adding the results to the pr). These can be run using the mteb run -m {model_name} -t {task_name} command.
  • sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2
  • intfloat/multilingual-e5-small
• I have checked that the performance is neither trivial (both models gain close to perfect scores) nor random (both models gain close to random scores).
• I have considered the size of the dataset and reduced it if it is too big (2048 examples is typically large enough for most tasks)
• Run tests locally to make sure nothing is broken using make test.
• Run the formatter to format the code using make lint.
• I have added points for my submission to the POINTS.md file.