<refactor>

AddMetaFilesToSln.csx

@@ -0,0 +1,14 @@
+using System.Text.RegularExpressions;
+
+var slnFile = Directory.GetFiles(@".", "*.sln").First();
+        var content = File.ReadAllText(slnFile);
+        content = Regex.Replace(content,@"ProjectSection\(SolutionItems\) = preProject(?:.|\n)*?EndProjectSection",
+        $"""
+ProjectSection(SolutionItems) = preProject
+{string.Join('\n',
+             Directory.GetFiles(@".", "*").Where(x => !x.EndsWith(".sln"))
+                      .Select(x=>$"\t\t{Path.GetFileName(x)} = {Path.GetFileName(x)}"))}
+{'\t'}EndProjectSection
+""");
+        Console.WriteLine(content);
+        File.WriteAllText(slnFile, content);