Add example to reverse

examples/src/reverse.cpp

@@ -0,0 +1,9 @@
+#include <utempl/utils.hpp>
+#include <iostream>
+
+auto main() -> int {
+  auto tuple = Reverse(utempl::Tuple{4, 3, 2, 1});
+  ForEach(tuple, [](auto arg){
+    std::cout << arg << std::endl;
+  });
+};