Implement emotes

[ethanmoffat]

Implement player emotes. Numpad 0-9 and delete key should trigger an emote from the main player. Other player emotes should be rendered on their characters. Level Up should be handled as an emote. AFK players should show the sleepy moon emote. Drunk players should send the drunk emote periodically.

See: IEmoteNotifier (added as part of issue #139)

Design:

• Start emote methods on CharacterAnimator
• CharacterRenderer has a character property renderer for face/emote that draws what's in the character's render properties when emoting