We have a lobby! (#127)

It's shoddy as hell but it works for our purposes.

Content.Client/Interfaces/IClientGameTicker.cs

@@ -0,0 +1,10 @@
+using SS14.Client;
+
+namespace Content.Client.Interfaces
+{
+    public interface IClientGameTicker
+    {
+        void Initialize();
+        void FrameUpdate(RenderFrameEventArgs renderFrameEventArgs);
+    }
+}