Add wifi manager portal (#161)

* Add Wifi manager web portal for ESP8266

#15
#83

* represent web page if MQTT failures at start

* add arduinojson library on CI and repo

* add parameter in test config for CI and correct ifdef

* add wifi manager library

* add possibility to manual setup esp8266 wifi credential

* add mqtt user and password into wifimanager

* Add MinimumWifiSignalQuality parameter

Following @ctripodi suggestion to remove AP with low signal quality

tests/Test_config.h

@@ -29,14 +29,14 @@
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 /*-------------------VERSION----------------------*/
-#define OMG_VERSION "0.6.1"
+#define OMG_VERSION "0.7"
 /*-------------DEFINE YOUR NETWORK PARAMETERS BELOW----------------*/
 //MQTT Parameters definition
-#define mqtt_server "192.168.1.17"
-//#define mqtt_user "your_username" // not compulsory only if your broker needs authentication
-#define mqtt_password "your_password" // not compulsory only if your broker needs authentication
-#define mqtt_port 1883
+//#define mqtt_server_name "www.mqtt_broker.com" // instead of defining the server by its IP you can define it by its name, uncomment this line and set the correct MQTT server host name
+#define mqtt_user "your_username" // not compulsory only if your broker needs authentication
+#define mqtt_pass "your_password" // not compulsory only if your broker needs authentication
 #define Gateway_Name "OpenMQTTGateway"
+#define WifiManager_password "your_password"
 #define version_Topic "home/" Gateway_Name "/version"
 #define will_Topic "home/" Gateway_Name "/LWT"
 #define will_QoS 0
@@ -44,10 +44,16 @@
 #define will_Message "Offline"
 #define Gateway_AnnouncementMsg "Online"
 #define MDNS_SD //comment if you don't want to use mdns for discovering automatically your ip server
+char mqtt_server[40] = "192.168.1.17";
+char mqtt_port[6] = "1883";
+
+//set minimu quality of signal so it ignores AP's under that quality
+#define MinimumWifiSignalQuality 8
+//#define ESPWifiManualSetup true //uncomment you don't want to use wifimanager for your credential settings on ESP
 
 /*-------------DEFINE YOUR NETWORK PARAMETERS BELOW----------------*/
 // Update these with values suitable for your network.
-#if defined(ESP8266) || defined(ESP32) // for nodemcu, wemos, esp32 and esp8266
+#ifdef ESP32 // for nodemcu, wemos, esp32 and esp8266
   #define wifi_ssid "wifi ssid"
   #define wifi_password "wifi password"
 #else // for arduino + W5100