All typedefs for structs that were present in other header
files have been moved to here. (Except node_t because the
renderer and netcode both define node_t LOL.)
Not complex because we aren't sending anything that isn't easily accessible via the Master Server anyway, just means we aren't sending plain-text IPs to Discord. Might be improved by basing the XOR key on other values (base RNG, maybe version) so that it's not like *right* there
It's soooo close to being awesome, but so far away. Making game invitations as the host meant that it would redirect to "connect self" for other people, because we can't get the IP address from the host.
If anyone has a solution, you've got my gratitude; this was going so smoothly until it hit that brick wall.
