conversions/pokemon: team_pokemon_to_pokelib_pokemon uses PokeLib-NC's functionality to update battle stats
PokeLib-NC: Pokemon::updateBattleStats no longer uses bitfields
Pokemon-sim -> PokeLib-NC conversion bugfix work

* Fixed modern_get/set_IV bitwise operations (confirmed by pokelib-nc_test)
* pokelib-nc_test checks EV's, IV's, and stats