move mapping.h to public headers

Change-Id: Ia4c02dbd45a122e85fa338c8d02da46f4f1055d1
diff --git a/src/upnp/protocol/mapping.h b/include/upnp/mapping.h
similarity index 99%
rename from src/upnp/protocol/mapping.h
rename to include/upnp/mapping.h
index 89e46b0..3ce16ac 100644
--- a/src/upnp/protocol/mapping.h
+++ b/include/upnp/mapping.h
@@ -22,7 +22,6 @@
 #pragma once
 
 #include "ip_utils.h"
-#include "igd.h"
 
 #include <map>
 #include <string>