Feature
* feat: Allow extending the load_dataset parameters in custom tasks inheriting AbsTask (299)
* Allow extending the load_dataset parameters
* format
* Fix test
* remove duplicated logic from AbsTask, now handled in the metadata
* add tests
* remove comments, moved to PR
* format
* extend metadata dict from super class
* Remove additional load_data
* test: adding very high level test
* Remove hf_hub_name and add test
* Fix revision in output file
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Co-authored-by: gbmarc1 <marcantoine.belangershopify.com> ([`953780d`](https://github.com/embeddings-benchmark/mteb/commit/953780dd680309cbae78f6543c005965ad9caf01))