Create In-Guidebook Errors (#28942)

* Create in-guidebook errors

* Localize client-facing parser error

* Uncomment line

* Missed another localization string

Content.Client/Guidebook/Controls/GuidebookError.xaml.cs

@@ -0,0 +1,23 @@
+using JetBrains.Annotations;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.Guidebook.Controls;
+
+[UsedImplicitly] [GenerateTypedNameReferences]
+public sealed partial class GuidebookError : BoxContainer
+{
+    public GuidebookError()
+    {
+        RobustXamlLoader.Load(this);
+    }
+
+    public GuidebookError(string original, string? error) : this()
+    {
+        Original.AddText(original);
+
+        if (error is not null)
+            Error.AddText(error);
+    }
+}