Handle the player connection

[TheElectronWill]

• Basic packets auto generated for MC 1.12.2
• Network system improved and bugs fixed
• Handshake, status request and login request handled
• Chunk management
• Send 7x7 chunks around the spawn location, after LoginSuccess is sent

[TheElectronWill]

• Copy packet files generated by DataTractor
• Make DataTractor write a MinecraftProtocol subclass that registers all the packets with their PacketObj
• Use it in TuubesCraft1_12 extension

Create one protocol per "sub protocol", that is, one for HANDSHAKE, one for LOGIN, one for PLAY.