Update WiFiScan.h (#3266)

Add an accessor function for the useful wifi data

Author: billprozac

libraries/WiFi/src/WiFiScan.h

@@ -45,6 +45,7 @@ class WiFiScanClass
     uint8_t * BSSID(uint8_t networkItem);
     String BSSIDstr(uint8_t networkItem);
     int32_t channel(uint8_t networkItem);
+    static void * getScanInfoByIndex(int i) { return _getScanInfoByIndex(i); }; 
 
     static void _scanDone();
 protected: