Add API server on port 4403 (kinda a WIP, seems to work but I haven't

finished the python client code)

src/nrf52/wifi-nrf52.cpp

@@ -10,4 +10,7 @@ bool isWifiAvailable()
     return false;
 }
 
-void handleWebResponse() {}
+void handleWebResponse() {}
+
+/// Perform idle loop processing required by the wifi layer
+void loopWifi() {}