Console Unify API Changes (#3059)

* Remove unused IChatCommand.

* Lots of refactoring into a shared context.

* Removed ICommonSession from server concmd Execute.

* Added argStr parameter to concmd execute.

* The execute function of client concmds now returns void, use the new shell.RemoteExecuteCommand function to forward commands.

* Finally move shells and commands into shared.

* Console commands can now be registered directly without a class in a shared context.

* Engine API Changes.

* Repair rebase damage.

* Update Submodule.

Content.Client/Commands/DebugPathfindingCommand.cs

@@ -1,6 +1,6 @@
 using Content.Client.GameObjects.EntitySystems.AI;
 using JetBrains.Annotations;
-using Robust.Client.Interfaces.Console;
+using Robust.Shared.Console;
 using Robust.Shared.GameObjects.Systems;
 
 namespace Content.Client.Commands
@@ -13,12 +13,13 @@ namespace Content.Client.Commands
         public string Description => "Toggles visibility of pathfinding debuggers.";
         public string Help => "pathfinder [hide/nodes/routes/graph/regioncache/regions]";
 
-        public bool Execute(IDebugConsole console, params string[] args)
+        public void Execute(IConsoleShell shell, string argStr, string[] args)
         {
 #if DEBUG
             if (args.Length < 1)
             {
-                return true;
+                shell.RemoteExecuteCommand(argStr);
+                return;
             }
 
             var anyAction = false;
@@ -63,9 +64,10 @@ namespace Content.Client.Commands
                 }
             }
 
-            return !anyAction;
+            if(!anyAction)
+                shell.RemoteExecuteCommand(argStr);
 #else
-            return true;
+            shell.RemoteExecuteCommand(argStr);
 #endif
         }
     }