Create dataset loader for EHRSQL

[glee4810]

Adding a Dataset

Name: EHRSQL
Description: Large-scale text-to-SQL dataset for question answering (QA) on electronic health records (MIMIC-III and eICU). It covers a wide range of questions asked in the hospital and aims to challenge the trustworthiness of the existing text-to-SQL models by testing whether the model can refuse to answer questions whenever they are not answerable.
Task: Text-to-SQL
Paper: paper
Data: data
License: CC BY 4.0