Make file type parametric

[ismailsimsek]

use GenericAppenderFactory to create append and delete files that should enable making file type (parquet, orc, avro) parametric, which we could read from application.properties

current:

 FileAppender<Record> writer;
 writer = Parquet.write(out)
        .createWriterFunc(GenericParquetWriter::buildWriter)
        .forTable(icebergTable)
        .overwrite()
        .build();

new:

GenericAppenderFactory apender = new GenericAppenderFactory(icebergTable.schema(), icebergTable.spec());
FileAppender<Record> writer = apender.newAppender(out, FileFormat.PARQUET);