[dotnet] Add dotnet projects and examples

+ Sitemap generator I created while learning the dispose pattern
+ Testing project for learning general C#

dotnet/testing/KlipsLibrary.Test/UnitTest1.cs

@@ -0,0 +1,22 @@
+using Xunit;
+
+namespace KlipsLibrary.Test;
+
+public class UnitTest1
+{
+    [Fact]
+    public void DogTest()
+    {
+        var dog = new Dog("Buford", "Woof");
+        Assert.Equal("Buford", dog.Name);
+        dog.Speak();
+    }
+    
+    [Fact]
+    public void HumanTest()
+    {
+        var human = new Human("Shaun", "Hi");
+        Assert.Equal("Shaun", human.Name);
+        human.Speak();
+    }
+}