add ClinGen IDs to genetic findings table

[smgogarten]

Write a workflow or notebook to get variants from genetic findings table, and use an API to retrieve ClinGen ids, then add them to the table. These updated genetic findings tables should then be written back to the upload workspace.

Note: could do this as a workflow that runs on each row of the findings table, since then the output value could be written back to the same table automatically by specifying the output column name.