Add sample with include globs

Author: kzu

samples/#include + #ref/app.stamp

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+#!/usr/bin/env dotnet
+#:property TargetFramework=net10.0
+
+#:include common.cs
+#:include features/*.cs
+#:include sub/**/*.cs
+
+using GlobInclude;
+
+Console.WriteLine("glob: " + Helper.Message() + " | " + Feature1.Id + " | " + Deep.Value + " (via #:include glob)");

samples/#include-glob/app.cs

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+namespace GlobInclude;
+
+public static class Helper
+{
+    public static string Message() => "glob common";
+}

samples/#include-glob/common.cs

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+namespace GlobInclude;
+
+public static class Feature1
+{
+    public static string Id => "f1";
+}

samples/#include-glob/features/feature1.cs

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+namespace GlobInclude;
+
+public static class Feature2
+{
+    public static string Id => "f2";
+}

samples/#include-glob/features/feature2.cs

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+namespace GlobInclude;
+
+public static class Deep
+{
+    public static string Value => "deep-glob";
+}