Core/PacketIO: Updated CMSG_BUY_ITEM structure and opcode.
Updated SMSG_BUY_ITEM structure and opcode.
Updated SMSG_BUY_FAILED structure and opcode.
Updated SMSG_INVENTORY_CHANGE_FAILURE structure and opcode.
Updated CMSG_SELL_ITEM structure and opcode.
Updated SMSG_SELL_ITEM structure and opcode.
Updated CMSG_BUYBACK_ITEM structure and opcode.
Updated CMSG_REPAIR_ITEM structure and opcode.

Thanks to @zalito12 and @projectcore for various parts of this commit =)
Core/PacketIO: Updated SMSG_CONTACT_LIST structure and opcode.
Updated CMSG_CONTACT_LIST opcode.
Updated CMSG_ADD_FRIEND opcode.
Updated CMSG_ADD_IGNORE opcode.
Updated CMSG_DEL_FRIEND opcode.
Updated CMSG_DEL_IGNORE opcode.
Updated CMSG_SET_CONTACT_NOTES opcode.
Updated SMSG_FRIEND_STATUS opcode.
Core/PacketIO: Updated SMSG_QUEST_CONFIRM_ACCEPT structure and opcode.
Updated SMSG_QUESTUPDATE_COMPLETE opcode.
Updated SMSG_QUESTLOG_FULL opcode.
Core/PacketIO: Updated SMSG_QUEST_POI_QUERY_RESPONSE structure and opcode.
Updated CMSG_QUEST_POI_QUERY structure and opcode.
Core/PacketIO: Small SMSG_SPELL_GO structure change, fixes crash on cast.
Database: Added Model info and Removed Some Creature Addons.
Should Fix Some DB Errors.

Close #281
- [ci skip]

Signed-off-by: AriDEV <aridev666@gmail.com>
Core/PacketIO; Updated CMSG_SET_ACTIONBAR_TOGGLES Opcode
Core/PacketIO; Updated CMSG_SET_PRIMARY_TALENT_TREE Opcode
Core/PacketIO; Updated CMSG_LEARN_TALENT Opcode

Signed-off-by: XEQT <xeqt@ask.me>
Core/PacketIO: Updated SMSG_MOVE_TELEPORT structure and opcode.
Updated CMSG_MOVE_TELEPORT_ACK structure and opcode.
Fixed some basic guild functionality - Too lazy to finish it atm

Signed-off-by: Sovak <Sovak007@gmail.com>