consolidate client version handling

Created by: Helianthella

tmwa

• add ClientVersion class (wrapped uint32_t)
• add missing native_tag and network_tag to NativeType
• add client version to 0x2713 and resize the packet
• resize client version in 0x2afd to use ClientVersion (uint32_t vs uint16_t)

login server

• use the actual version field, not the flags field (will require a tiny modification in MM+guild)
• actually handle the flags (well, one of them)
• pass client version to char server

char server

• ignore client version sent from client
• use the client version that is sent from login server
• pass client version to map server

map server

• update clif_send to use ClientVersion