Create the networking basics

[ikskuh]

Create a network abstraction that allows the following actions:

• Create a server
• Create a client and connect it to the server
• Send and receive messages
  • messages are stored in a tagged union (each member is a distinct message)
  • add a option to define a channel (integer number) and QoS property to the sent message, even if it is not implemented in the backend
  • messages must be serialized/deserialized and must not be flat memory copies
    • this allows smaller messages to be sent (if a message is of type void we just send the event type)
    • this allows communication between BE and LE machines (important!)
• The network protocol must have a versioning handshake, so we can check for version mismatches

QoS properties include two axis:

• reliability enum { unreliable, reliable }
• ordering enum { ordered, unordered }

The network system can just use TCP in the backend for now. It's not super performant or lag-free, but it will work
We can than exchange that for a faster reliable UDP implementation later.

The Network abstraction should land in a structure similar to Audio or Renderer so it can be developed and maintained separately from the rest of the game and should expose at least a createServer and connectToServer function that will return immediatly even if the connect/creation takes a while, so the game will not block.

All other network APIs shouldn't be blocking as well