add wrapper file so 1.1 can be run

src/Chapter01/Chapter01.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <ChapterNumber>01</ChapterNumber>
 	<ExpectedWarnings>$(ExpectedWarnings)</ExpectedWarnings>

src/Chapter01/TopLevelStatementWrapperForListing01.01.cs

@@ -0,0 +1,16 @@
+// See https://aka.ms/new-console-template for more information
+// this file redirects debug break points to Listing01.01.HelloWorldInC#.cs
+// allowing for the appearance that the top-level statement file of Listing01.01.HelloWorldInC#.cs is what is being ran.
+namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter01.Listing01_01
+{
+    public class HelloWorld
+    {
+        public static void Main()
+        {
+            // the #line directive reroutes the debugger's line mapper from this file to "Listing01.01.HelloWorldInC#.cs"
+            // see https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/preprocessor-directives#error-and-warning-information
+#line (3,1) - (3,55) 13 "Listing01.01.HelloWorldInC#.cs"
+            Console.WriteLine("Hello. My name is Inigo Montoya.");
+        }
+    }
+}

src/Shared/Program.cs

@@ -1,4 +1,4 @@
-using System.Diagnostics.CodeAnalysis;
+using System.Diagnostics.CodeAnalysis;
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Text.RegularExpressions;
@@ -41,15 +41,6 @@ public static async Task Main(string[] args)
         {
             input = ParseListingName(input);
 
-            // We handle listing 1.1 specially since the listing is a top level statement and
-            // the file (Listing01.01.HelloWorldInC#.cs) is set to not build as part of the project.
-            if(input == "01_01")
-            {
-                throw new InvalidOperationException(
-                    "This listing (HelloWorld) is left as an exercise for the reader on the command line. ");
-            }
-
-
             Regex reg = new($"Listing{input}\\.+");
 
             IEnumerable<Type?> targets = assembly.GetTypes().Where(type =>