Data Preprocessing

[amc-corey-cox]

This the tracking issue for all development necessary to preprocess the data before handing it off to the LinkML tools. This will include both the simple preprocessing of fixing simple data anomalies (missing value represented as values, enum inconsistencies, etc.) and complex preprocessing for transformations that may be non-atomic (converting full name to first name last name, joining multiple columns to output multiple columns).

The two main sub-issues will be the simple preprocess tool and the complex preprocess tool Sub-issues related to each of these tools should be child issues of the main sub-issue but other sub-issues related to integrating these into the pipeline should also be here.