canaddr: Decode address claims

[Notgnoshi]

I want to scrape https://www.isobus.net/isobus/ and print the human-meaningful NAME fields wherever possible.

Complications:

• If this is to be parse-only, then it's easier: map numbers to strings
• If this is to enable generating a NAME, a NAME-filter, then it's harder
  • What API do you provide for the hierarchical fields? Enums? Nested enums? Constants nested in modules?
  • A strongly typed NAME builder? Can it force requiring e.g., IG2-specific (or global) device classes if IG==2?

Can this be code-genned from the CSV export https://www.isobus.net/isobus/attachments/isoExport_csv.zip ?