TCP network stack and more saved preferences

Use a TCP based server for lobbly only for now to handle initial
game set up including sending player names and IP addresses and
game limits via JSON.

Reduce the amount of UDP network spam by only sending shots fired
and hit messages once per animation time frame instead of on every
shot or hit.

Make shot mode, recoil, game mode, game limits, and player / team
a preference that saves and persists across app restarts to make
it easier to get into the same game you were playing last time.