feat(mafia): Merge Ghost into Mafia

[Golbolco]

Acceptance Criteria:

• Deprecate Ghost minigame
• Introduce Ghost as a hostile independent role
• Create new “Morning” state for guesses to be input
• Recalibrate the index of words (consult the community)
• Miller, Mafia, and Fool get the false word
• Replace Host with a Ghost-aligned role that creates the word but cannot say it on pain of death/autoloss for the Ghosts