Move examples into tree

See history at https://github.com/intrepidcs/libicsneo-examples/tree/v0.2.0-dev

examples/csharp/Program.cs

@@ -0,0 +1,8 @@
+namespace libicsneocsharp_example {
+    class Program {
+        static void Main(string[] args) {
+            InteractiveExample example = new InteractiveExample();
+            example.Run();
+        }
+    }
+}