Connect
Abstract class representing a message for connecting to the server.
The connection handshake goes as follows:
Client sends a RequestPrivateKailleraPortRequest
Server responds with RequestPrivateKailleraPortResponse, which includes a private port allocated for that client.
After that point the client never interacts with the connect server. There are other subtypes ConnectMessage_ServerFull, ConnectMessage_PING, and ConnectMessage_PONG which I do not believe are used by the connect server and probably shouldn't inherit from this class.