[ESX/QBCore] ZSX Multicharacter - Character Selection Screen

Multi-character selection interface with a modern NUI design showing character cards with name, job, cash balance, and last-played timestamp. Players create new characters through an integrated appearance setup flow and switch between existing ones from the selection screen. Configurable character slot limits per server permission group, with VIP tiers unlocking additional slots. Handles spawn location memory, character data isolation, and clean session transitions between characters.