dynamic feature converter

...s/etl/dynamix/tools/feature_converter/CategoryOracle.java

...namix/tools/feature_converter/FeatureVectorConverter.java

...bis/dss/etl/dynamix/tools/feature_converter/Features.java

...bis/dss/etl/dynamix/tools/feature_converter/InputRow.java

.../etl/dynamix/tools/feature_converter/InputRowFactory.java

.../etl/dynamix/tools/feature_converter/InputRowsHelper.java

...mix/tools/feature_converter/InputRowsNamedCollection.java

...is/dss/etl/dynamix/tools/feature_converter/OutputRow.java

...s/dss/etl/dynamix/tools/feature_converter/TsvBuilder.java