Make GameController created by IoC, remove GameControllerProxy.

Robust.UnitTesting/GameControllerDummy.cs

@@ -0,0 +1,40 @@
+using Robust.Client.Input;
+using Robust.Client.Interfaces;
+
+namespace Robust.UnitTesting
+{
+    internal sealed class GameControllerDummy : IGameControllerInternal
+    {
+        public void Shutdown(string reason = null)
+        {
+        }
+
+        public void KeyDown(KeyEventArgs keyEvent)
+        {
+        }
+
+        public void KeyUp(KeyEventArgs keyEvent)
+        {
+        }
+
+        public void TextEntered(TextEventArgs textEvent)
+        {
+        }
+
+        public void MouseDown(MouseButtonEventArgs mouseEvent)
+        {
+        }
+
+        public void MouseUp(MouseButtonEventArgs mouseButtonEventArgs)
+        {
+        }
+
+        public void MouseMove(MouseMoveEventArgs mouseMoveEventArgs)
+        {
+        }
+
+        public void MouseWheel(MouseWheelEventArgs mouseWheelEventArgs)
+        {
+        }
+    }
+}