Multiple ships flying around the universe!

* Project dependencies between server, client, and console

Server:
* Game.PlayerManager is now public
* GameHub now responds to starting and stopping movement
* Sync'ing game state to players no longer logs a debugging message
* Ships now move based on an enumerated direction
* New math helper for calculating radians from degrees

Client:
* Ships now move based on an enumerated direction
* ShipManager now maintains keyboard-movement mapping
* ShipManager sends movement input to server