Add reverse_string utility function in cliutils namespace

Author: jamisiveshkumar

include/cliutils/custom_util.hpp

@@ -0,0 +1,11 @@
+#pragma once
+#include <string>
+
+namespace cliutils {
+
+// Returns the reverse of a given string
+inline std::string reverse_string(const std::string &input) {
+    return std::string(input.rbegin(), input.rend());
+}
+
+}