Create networking module

[thecodewarrior]

Create a module to make networking easier. This will probably involve some utility classes to manage registering and sending packets, as well as a base packet class that uses Prism to (de)serialize the payload. This will eventually use the binary serialization from #142, however until that's implemented this can use the NBT serializers and encode the resulting NBT tags to binary.

[thecodewarrior]

Implemented in f419099