Server/PacketIO: Small structure fix for CMSG_MESSAGECHAT_AFK/DND.
Server/PacketIO: Updated CMSG_SPLIT_ITEM structure and opcode.
Server/PacketIO: Updated CMSG_AUTOSTORE_BAG_ITEM structure and opcode.
Server/PacketIO: Updated CMSG_AUTOBANK_ITEM structure and opcode.
Server/PacketIO: Updated CMSG_AUTOSTORE_BANK_ITEM opcode.