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.Server/Commands/Body/RemoveHandCommand.cs

@@ -1,11 +1,11 @@
-#nullable enable
+#nullable enable
 using System.Linq;
 using Content.Server.Administration;
 using Content.Shared.Administration;
 using Content.Shared.GameObjects.Components.Body;
 using Content.Shared.GameObjects.Components.Body.Part;
-using Robust.Server.Interfaces.Console;
 using Robust.Server.Interfaces.Player;
+using Robust.Shared.Console;
 using Robust.Shared.Interfaces.Random;
 using Robust.Shared.IoC;
 using Robust.Shared.Random;
@@ -13,23 +13,24 @@ using Robust.Shared.Random;
 namespace Content.Server.Commands.Body
 {
     [AdminCommand(AdminFlags.Fun)]
-    class RemoveHandCommand : IClientCommand
+    class RemoveHandCommand : IConsoleCommand
     {
         public string Command => "removehand";
         public string Description => "Removes a hand from your entity.";
         public string Help => $"Usage: {Command}";
 
-        public void Execute(IConsoleShell shell, IPlayerSession? player, string[] args)
+        public void Execute(IConsoleShell shell, string argStr, string[] args)
         {
+            var player = shell.Player as IPlayerSession;
             if (player == null)
             {
-                shell.SendText(player, "Only a player can run this command.");
+                shell.WriteLine("Only a player can run this command.");
                 return;
             }
 
             if (player.AttachedEntity == null)
             {
-                shell.SendText(player, "You have no entity.");
+                shell.WriteLine("You have no entity.");
                 return;
             }
 
@@ -38,14 +39,14 @@ namespace Content.Server.Commands.Body
                 var random = IoCManager.Resolve<IRobustRandom>();
                 var text = $"You have no body{(random.Prob(0.2f) ? " and you must scream." : ".")}";
 
-                shell.SendText(player, text);
+                shell.WriteLine(text);
                 return;
             }
 
             var (_, hand) = body.Parts.FirstOrDefault(x => x.Value.PartType == BodyPartType.Hand);
             if (hand == null)
             {
-                shell.SendText(player, "You have no hands.");
+                shell.WriteLine("You have no hands.");
             }
             else
             {