Added MedConceptsQA Benchmark (#2010)

* Added MedConceptsQA Benchmark

* pre-commit factor

* update group name

* update in naming

* changed name

* Changed mcqa to med_concepts_qa prefix

* Added med_concepts_qa to README.md

* Changed config files according the new format

* Updated README

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Co-authored-by: lintangsutawika <lintang@eleuther.ai>

lm_eval/tasks/med_concepts_qa/med_concepts_qa_icd9cm_hard.yaml

+dataset_name: icd9cm_hard
+include: _default_template_yaml
+tag: med_concepts_qa_icd9cm_tasks
+task: med_concepts_qa_icd9cm_hard
+task_alias: icd9cm_hard

lm_eval/tasks/med_concepts_qa/med_concepts_qa_icd9cm_medium.yaml

+dataset_name: icd9cm_medium
+include: _default_template_yaml
+tag: med_concepts_qa_icd9cm_tasks
+task: med_concepts_qa_icd9cm_medium
+task_alias: icd9cm_medium

lm_eval/tasks/med_concepts_qa/med_concepts_qa_icd9proc_easy.yaml

+dataset_name: icd9proc_easy
+include: _default_template_yaml
+tag: med_concepts_qa_icd9proc_tasks
+task: med_concepts_qa_icd9proc_easy
+task_alias: icd9proc_easy

lm_eval/tasks/med_concepts_qa/med_concepts_qa_icd9proc_hard.yaml

+dataset_name: icd9proc_hard
+include: _default_template_yaml
+tag: med_concepts_qa_icd9proc_tasks
+task: med_concepts_qa_icd9proc_hard
+task_alias: icd9proc_hard

lm_eval/tasks/med_concepts_qa/med_concepts_qa_icd9proc_medium.yaml

+dataset_name: icd9proc_medium
+include: _default_template_yaml
+tag: med_concepts_qa_icd9proc_tasks
+task: med_concepts_qa_icd9proc_medium
+task_alias: icd9proc_medium