Add Support for `list<item: string>` Types in SQLAdapter

[genematx]

The underlying arrow schema may declare some columns as being of list<item: string> type, i.e. lists of strings, however the SQLAdapter does not recognize them and returns each row as a single string representation of the entire array. When client reads such a column from a table, we would expect the result to be an array (possibly ragged) of arrays of strings.