Added namespaces to includes like in Python. (0.14.0)

examples/namespaced_mod.fun

@@ -0,0 +1,25 @@
+#!/usr/bin/env fun
+// The shebang line makes no sense here because this is a library which will 
+// never be executed, but it shows that it is not wrong. 
+
+/*
+* This file is part of the Fun programming language.
+ * https://hanez.org/project/fun/
+ *
+ * Copyright 2025 Johannes Findeisen <you@hanez.org>
+ * Licensed under the terms of the ISC license.
+ * https://opensource.org/license/isc-license-txt
+ *
+ * Added: 2025-09-30
+ */
+
+// namespaced_mod.fun
+// Simple module to demonstrate include-as namespaces with functions and classes.
+
+fun hello(name)
+  return "Hello, " + to_string(name) + "!"
+
+class Greeter(string prefix)
+  // Methods must declare 'this' as the first parameter
+  fun say(this, name)
+    print(this.prefix + " " + to_string(name))