Create csv package

The `csv` package contains modules for working with comma separated
value (csv) files.

Author: cboehme

src/main/java/org/culturegraph/mf/stream/converter/CsvDecoder.java renamed to src/main/java/org/culturegraph/mf/csv/CsvDecoder.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.culturegraph.mf.stream.converter;
+package org.culturegraph.mf.csv;
 
 import java.io.IOException;
 import java.io.StringReader;

src/main/resources/flux-commands.properties

@@ -44,7 +44,7 @@ decode-aseq org.culturegraph.mf.stream.converter.bib.AseqDecoder
 decode-pica org.culturegraph.mf.stream.converter.bib.pica.PicaDecoder
 decode-mab org.culturegraph.mf.stream.converter.bib.MabDecoder
 decode-formeta org.culturegraph.mf.formeta.FormetaDecoder
-decode-csv org.culturegraph.mf.stream.converter.CsvDecoder
+decode-csv org.culturegraph.mf.csv.CsvDecoder
 decode-marc21 org.culturegraph.mf.stream.converter.bib.Marc21Decoder
 decode-xml org.culturegraph.mf.xml.XmlDecoder
 decode-string org.culturegraph.mf.strings.StringDecoder

src/test/java/org/culturegraph/mf/stream/converter/CsvDecoderTest.java renamed to src/test/java/org/culturegraph/mf/csv/CsvDecoderTest.java

@@ -13,7 +13,7 @@
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
  */
-package org.culturegraph.mf.stream.converter;
+package org.culturegraph.mf.csv;
 
 import static org.mockito.Mockito.inOrder;