Extend termination criteria

[balintn22]

Hi,

I really like the simple approach, but imho DataExtractor.GetData() termination is lacking: it can either terminate based on the row number or on the value of a single property.
I propose to extend the termination test like this:

`
///

/// Obtains the entities for the columns previously configured.
/// The indicates the initial row that will be read,
/// the data extraction will only occur while the predicate returns true.
/// It'll get executed receiving the row index as parameter before extracting the data of each row.
///

/// The initial row to start the data extraction.
/// The condition that is evaulated for each row. The last fetched record is
/// passed as the argument to the predicate. The condition is evaluated before the row under test is
/// returned. Row fetching stops when the test returns false.
/// Returns an with the data of the columns.
public IEnumerable GetDataUntil(int fromRow, Func<int, TRow, bool> whileFunc)
{
if (whileFunc is null)
throw new ArgumentNullException(nameof(whileFunc));

        int row = fromRow;
        while(true)
        {
            var dataInstance = new TRow();

            bool continueExecution = true;
            for (int index = 0; continueExecution && index < this.propertySetters.Count; index++)
                continueExecution = this.propertySetters[index].SetPropertyValue(dataInstance, row, this.worksheet.Cells);

            if (!continueExecution)
            {
                yield return dataInstance;
                break;
            }

            foreach (var collectionPropertySetter in this.collectionColumnSetters)
                collectionPropertySetter.SetPropertyValue(dataInstance, row, this.worksheet.Cells);

            foreach (var simpleCollectionColumnSetter in this.simpleCollectionColumnSetters)
                simpleCollectionColumnSetter.SetPropertyValue(dataInstance, row, this.worksheet.Cells);

            if(!whileFunc(row, dataInstance))
                break;

            yield return dataInstance;

            row++;
        }
    }

`