Defining a Packet
A packet in Architectury is a vanilla CustomPacketPayload: a small object holding the data
Sending & Receiving
With a payload defined, use dev.architectury.networking.NetworkManager
Entity Spawn Packets
Non-living (and other custom) entities need a spawn packet so the client knows to create them.
Large Packets
Minecraft limits the size of a single custom packet. If a payload can exceed that limit, attach a