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

finished the python client code)

src/meshwifi/meshwifi.h

@@ -5,12 +5,16 @@
 #include <functional>
 
 #ifdef HAS_WIFI
-#include <WiFi.h>
 #include <DNSServer.h>
+#include <WiFi.h>
 #endif
 
 void initWifi();
 void deinitWifi();
+
+/// Perform idle loop processing required by the wifi layer
+void loopWifi();
+
 bool isWifiAvailable();
 
 void handleDNSResponse();