Added ngrest project structure and absolutehumidity rest

RestServer/humidityserver/src/humidityserver.cpp

@@ -0,0 +1,14 @@
+// This file generated by ngrestcg
+// For more information, please visit: https://github.com/loentar/ngrest
+
+#include "humidityserver.h"
+
+/*std::string humidityserver::echo(const std::string& text)
+{
+    return "Hi, " + text;
+}*/
+
+float humidityserver::absolutehumidity(float temperature, float humidity) {
+    
+    return temperature + humidity; 
+}