Add command to toggle ghost visibility on the client (#27314)

* Add command to toggle ghost visibility on the client

* Fix description

* Fix index of arg parsing

* Allow setting GhostVisibility directly

Content.Client/Ghost/Commands/ToggleGhostVisibilityCommand.cs

@@ -0,0 +1,26 @@
+using Robust.Shared.Console;
+
+namespace Content.Client.Ghost.Commands;
+
+public sealed class ToggleGhostVisibilityCommand : IConsoleCommand
+{
+    [Dependency] private readonly IEntitySystemManager _entSysMan = default!;
+
+    public string Command => "toggleghostvisibility";
+    public string Description => "Toggles ghost visibility on the client.";
+    public string Help => "toggleghostvisibility [bool]";
+
+    public void Execute(IConsoleShell shell, string argStr, string[] args)
+    {
+        var ghostSystem = _entSysMan.GetEntitySystem<GhostSystem>();
+
+        if (args.Length != 0 && bool.TryParse(args[0], out var visibility))
+        {
+            ghostSystem.ToggleGhostVisibility(visibility);
+        }
+        else
+        {
+            ghostSystem.ToggleGhostVisibility();
+        }
+    }
+}