Handle asymmetrical portraits correctly

[tech-ticks]

• Unk. Bit1 in graphics flags seems to specify whether the Pokémon uses a different portrait when it's female. It should be named correctly in the UI.

  • What happens if the file name is changed for the female form in general (e.g. Raichu's female form uses raichuu instead of raichu_f)? I guess it might work too if the flag is not set?
  • Female portaits already work correctly, see e.g. Wobbuffet

• Unk. Bit9 in graphics flags specifies whether the Pokémon uses asymmetrical portraits. It should be named correctly in the UI.

• Add support for importing female and asymmetrical portraits. The file for asymmetrical Pokémon must be named {normal file name}_hanten.ab. Female forms are named {normal file name}_f_[hanten].ab, where hanten is appended based on whether it's also asymmetrical. (the combination of female + asymmetical isn't used in-game). This is due to a string hardcoded concat in ActObjCharactor_c_DisplayClass74_0__TryLoadAndInit_b__0: