Initial WiFi auto reconnect implementation

This needs proper testing!
Fixes: https://github.com/espressif/arduino-esp32/issues/353

libraries/WiFi/src/WiFiSTA.cpp

@@ -84,6 +84,7 @@ static bool sta_config_equal(const wifi_config_t& lhs, const wifi_config_t& rhs)
 // ---------------------------------------------------- STA function -----------------------------------------------------
 // -----------------------------------------------------------------------------------------------------------------------
 
+bool WiFiSTAClass::_autoReconnect = true;
 bool WiFiSTAClass::_useStaticIp = false;
 wl_status_t WiFiSTAClass::_status = WL_NO_SHIELD;
 /**
@@ -302,6 +303,17 @@ bool WiFiSTAClass::getAutoConnect()
     return autoConnect;
 }
 
+bool WiFiSTAClass::setAutoReconnect(bool autoReconnect)
+{
+    _autoReconnect = autoReconnect;
+    return true;
+}
+
+bool WiFiSTAClass::getAutoReconnect()
+{
+    return _autoReconnect;
+}
+
 /**
  * Wait for WiFi connection to reach a result
  * returns the status reached or disconnect if STA is off

libraries/WiFi/src/WiFiSTA.h

@@ -51,6 +51,7 @@ public:
     bool getAutoConnect();
 
     bool setAutoReconnect(bool autoReconnect);
+    bool getAutoReconnect();
 
     uint8_t waitForConnectResult();
 
@@ -84,6 +85,7 @@ public:
 protected:
     static wl_status_t _status;
     static bool _useStaticIp;
+    static bool _autoReconnect;
 
 public: 
     bool beginSmartConfig();