Stupidly shoddy combat mode system.

Doesn't even work for guns, oh well.

Content.Client/Input/ContentContexts.cs

@@ -24,6 +24,7 @@ namespace Content.Client.Input
             human.AddFunction(ContentKeyFunctions.ActivateItemInWorld);
             human.AddFunction(ContentKeyFunctions.ThrowItemInHand);
             human.AddFunction(ContentKeyFunctions.OpenContextMenu);
+            human.AddFunction(ContentKeyFunctions.ToggleCombatMode);
 
             var ghost = contexts.New("ghost", "common");
             ghost.AddFunction(EngineKeyFunctions.MoveUp);