Accept "in" and "out" flags to -whitelist to allow whitelisting manual connections

src/net_permissions.h

@@ -3,6 +3,7 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <netaddress.h>
+#include <netbase.h>
 
 #include <string>
 #include <type_traits>
@@ -88,7 +89,7 @@ public:
 class NetWhitelistPermissions : public NetPermissions
 {
 public:
-    static bool TryParse(const std::string& str, NetWhitelistPermissions& output, bilingual_str& error);
+    static bool TryParse(const std::string& str, NetWhitelistPermissions& output, ConnectionDirection& output_connection_direction, bilingual_str& error);
     CSubNet m_subnet;
 };