Nanotron, Multilingual tasks update + misc (#756)
## Nanotron
- Logprobs working
- Generation works with https://github.com/huggingface/nanotron/tree/nouamane/lighteval-fix, however sometimes there is issue with ordering.
- Only relevant part of config are fetched to prevent some dataclass checks which are not needed in nanotron
- Smol changes to configs
## Metrics
- Probability metrics now works with Char normalization
- Token normalization is fixed when used with transformers
## Multlilingual tasks
- New squads + few new mcf benchmarks + smol fixes to existing tasks
## Misc
- Qa template now only uses unique golds, which speed-upds probs calculation.
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Co-authored-by: anton <anton@huggingface.co>
Co-authored-by: nouamanetazi <nouamane98@gmail.com>
Co-authored-by: Hynek Kydlicek <kydlicek.hynek@huggingface.co>
