feat: Add a RGSEAA flashtext list

[teolemon]

What

The Spanish traceability codes have a slightly specific format. This is a file that should allow us to detect many of them.

DONE

• Add a RGSEAA flashtext list based on the work of @jussi

TODO

• See if a REGEX is not a better way
  • Several combinations: "RGSEAA" OR "R.G.S.E.A.A" / "-" OR ":" OR " "
• Bind to the processing pipeline

Part of

• Add detection for more packaging codes #108