added character map util function for default character emojis

[JustinPinero]

Added util function that assigns a default emoji based on the name of the current persona. Current map and emoji pairings are:
assassin: "dagger_knife" 🗡️
assistant_chef: "hocho" 🔪
bandit: "crossed_swords" ⚔️
battle_master: "trident" 🔱
big_sheep_like_brown_dog: "dog2" 🐕
bighorn_sheep: "ram" 🐏
butler: "bellhop_bell" 🛎️
drunk_reeling_out_of_the_saloon: "beer" 🍺
fox: "fox_face" 🦊
goblin: "smiling_imp" 😈
graveyard_keeper: "coffin" ⚰️
groundskeeper: "seedling" 🌱
half_wild_cat: "tiger" 🐯
jailer: "old_key" 🗝️
lady_of_the_house: "princess" 👸
lord: "crown" 👑
master_at_arms: "shield" 🛡️
milk_man: "glass_of_milk" 🥛
monkey_friend: "monkey" 🐒
pig: "pig" 🐷
priest: "church" ⛪
rat: "rat" 🐀
serving_boy: "boy" 👦
skeleton_assistant: "skull" 💀
small_aggressive_looking_dog: "dog" 🐶
smith: "hammer" 🔨
town_doctor: "syringe" 💉

These can be changed easily at anytime and are currently located in the DefaultEmojiMapper function in the utils file in the Light GameApp. Every persona emoji pairing has been tested in game and works properly.

[JackUrb]

Great choices! Just making sure we don't lose the autopicking code for future releases when we may have more characters than these.

[JackUrb]

In the case where characterName is not in the map, we should default to the old autopicking code:

    const skipWords = ["a", "the", "an", "of", "with", "holding"];
    const tryPickEmojis = !persona
      ? []
      : persona.name
          .split(" ")
          .filter((token) => !!token)
          .map((token) => token.replace(/\.$/, ""))
          .filter((word) => skipWords.indexOf(word.toLowerCase()) === -1)
          .flatMap((term) =>
            emojiIndex.search(term).map((o) => {
              return o.native;
            })
          );

    const autopickedEmoji =
      tryPickEmojis.length > 0 ? tryPickEmojis[0] : defaultEmoji;
    return autopickedEmoji;