feat(mafia): Deprecate “start with X item” modifiers, introduce starting inventory

[Golbolco]

Acceptance criteria:

• Remove the many modifiers that give a player an item to start
• Introduce related “starting inventory” setting for role UI on Play/Create
• Can assign any item to any role, with a cap of X (TBD)
• Some items have args, include that in setup creation UI
• Starting inventory does not contribute to modifier cap
• Reuse Ammico’s icons for UI