Add support for GS1 Datamatrix and encoding FNC1 symbol

[Bjoern-Moeller-Solum]

The original barcode4j did not have support for GS1 encoded Datamatrix codes because it lacked the capability to encode the FNC1 symbol necessary that serves as a prefix and separator for AI fields. This would increase the usability of this library a lot since GS1 Datamatrix is on its way to become an industry standard.

https://barcode4j.sourceforge.net/2.1/symbol-datamatrix.html
https://sourceforge.net/p/barcode4j/mailman/message/28778359/

https://www.gs1.org/standards/gs1-datamatrix-guideline/25#1-Introduction-to-GS1-DataMatrix+1-2-Technical-characteristics