Fix StreamingOemWriter in ITRF w/o optional fields
In Orekit 10.x StreamingOemWriter had the option for the user to select the output reference frame and to not write optional metadata fields. This commit adds those features to the 11.x branch while maintaining compatibility with the existing 11.x releases. A constructor parameter is added to StreamingOemWriter that determines wheter the reference frame of each segment changes depending on the state's attitude's frame or if the reference frame from the metadata is used. Interpolation degree values less than zero are treated as null when writing an OEM. Added a test case.