Add final implementation of server
Add example server and client

These are the examples `man 3 getaddrinfo` gives. Adding here for reference
later
Add client to work with server

This example is almost entirely based on the example `man 3 getadrinfo` only
modified for TCP communication over INET.
Add pointers example to play around buffers

Demonstrates manual writing / terminating by incremeting pointers
Makefile change