When villager’s career is known, change entity’s career to match

[riddle]

Some client-side mods can show Villager career (brown robed villager careers: Fisherman, Farmer, Shepherd, etc).

Because TradeCraft assigns professions based on editable config, the entity NBT’s Career doesn’t influence what is shown in the trade GUI, which is good.

I propose editing entity’s Career tag if config-defined careers (sub nodes of Professions) match vanilla ones. For the record, those are vanilla:

Professions:
  '0':
  - Farmer
  - Fisherman
  - Shepherd
  - Fletcher
  '1':
  - Librarian
  '2':
  - Cleric
  '3':
  - Armorer
  - Weapon Smith
  - Tool Smith
  '4':
  - Butcher
  - Leatherworker