feat: Add mmlu-redux and it's spanish transaltion as generative task definitions (#2705)

* Added benchmark

* Added more testing

* Added task definition for mmlu_redux and mmlu_redux_spanish

* Add MMLU Redux English and Spanish tasks with YAML fixes and READMEs

* Add remaining MMLU Redux YAMLs and updated tasks README

* Add MMLU Redux English and Spanish tasks with YAML fixes and READMEs

* Add MMLU Redux changes from pr-2705

* Resolve pre-commit hook and pytest overlapping group issues by adding mmlu_redux_spanish task entries and unique subgroup names

* Enhance retry logic to prevent 429 error when using Hugging Face API for tests, apply pre-commit fixes

* Revert python test changes and comments one task group to avoid Hugging Face rate limit and task failure

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Co-authored-by: CT-6282 <ricardo.godric@hotmail.com>

lm_eval/tasks/mmlu-redux/generative/mmlu_virology.yaml

+"dataset_name": "virology"
+"description": "The following are multiple choice questions (with answers) about virology.\n\
+  \n"
+"tag": "mmlu_other_generative"
+"include": "_default_template_yaml"
+"task": "mmlu_virology_generative"
+"task_alias": "virology"

lm_eval/tasks/mmlu-redux/generative/mmlu_world_religions.yaml

+"dataset_name": "world_religions"
+"description": "The following are multiple choice questions (with answers) about world\
+  \ religions.\n\n"
+"tag": "mmlu_humanities_generative"
+"include": "_default_template_yaml"
+"task": "mmlu_world_religions_generative"
+"task_alias": "world_religions"