Core/Packets: Added the following packets:
CMSG_BANKER_ACTIVATE
CMSG_BINDER_ACTIVATE
CMSG_GOSSIP_HELLO
CMSG_LIST_INVENTORY
CMSG_TRAINER_LIST
SMSG_GOSSIP_MESSAGE
SMSG_LIST_INVENTORY
CMSG_NPC_TEXT_QUERY
SMSG_NPC_TEXT_UPDATE
Implemented CMSG_DB_QUERY_BULK and SMSG_DB_REPLY and removed unused CMSG_REQUEST_HOTFIX