v1.8.2 to optimize code, etc.

### Release v1.8.2

1. Optimize code by using passing by `reference` instead of by `value`
2. Optional `Board_Name` in Menu. Check [option to remove board name from web page #25](khoih-prog/WiFiManager_NINA_Lite#25)
3. Add function `isConfigMode()` to signal system is in Config Portal mode.

Author: khoih-prog

examples/ESPAsync_WiFi/ESPAsync_WiFi.ino

@@ -14,14 +14,21 @@
 #include "Credentials.h"
 #include "dynamicParams.h"
 
+ESPAsync_WiFiManager_Lite* ESPAsync_WiFiManager;
+
 void heartBeatPrint()
 {
   static int num = 1;
 
   if (WiFi.status() == WL_CONNECTED)
-    Serial.print(F("H"));        // H means connected to WiFi
+    Serial.print("H");        // H means connected to WiFi
   else
-    Serial.print(F("F"));        // F means not connected to WiFi
+  {
+    if (ESPAsync_WiFiManager->isConfigMode())
+      Serial.print("C");        // C means in Config Mode
+    else
+      Serial.print("F");        // F means not connected to WiFi  
+  }
 
   if (num == 80)
   {
@@ -48,8 +55,6 @@ void check_status()
   }
 }
 
-ESPAsync_WiFiManager_Lite* ESPAsync_WiFiManager;
-
 #if USING_CUSTOMS_STYLE
 const char NewCustomsStyle[] /*PROGMEM*/ = "<style>div,input{padding:5px;font-size:1em;}input{width:95%;}body{text-align: center;}\
 button{background-color:blue;color:white;line-height:2.4rem;font-size:1.2rem;width:100%;}fieldset{border-radius:0.3rem;margin:0px;}</style>";

examples/ESPAsync_WiFi/defines.h

@@ -124,6 +124,11 @@
 
 /////////////////////////////////////////////
 
+// Optional, to use Board Name in Menu
+#define USING_BOARD_NAME                    true
+
+/////////////////////////////////////////////
+
 #include <ESPAsync_WiFiManager_Lite.h>
 
 #if ESP8266 

examples/ESPAsync_WiFi_MQTT/ESPAsync_WiFi_MQTT.ino

@@ -52,9 +52,14 @@ void heartBeatPrint()
   static int num = 1;
 
   if (WiFi.status() == WL_CONNECTED)
-    Serial.print("W");        // W means connected to WiFi
+    Serial.print("H");        // H means connected to WiFi
   else
-    Serial.print("N");        // N means not connected to WiFi
+  {
+    if (ESPAsync_WiFiManager->isConfigMode())
+      Serial.print("C");        // C means in Config Mode
+    else
+      Serial.print("F");        // F means not connected to WiFi  
+  }
 
   if (num == 40)
   {

examples/ESPAsync_WiFi_MQTT/defines.h

@@ -124,6 +124,11 @@
 
 /////////////////////////////////////////////
 
+// Optional, to use Board Name in Menu
+#define USING_BOARD_NAME                    true
+
+/////////////////////////////////////////////
+
 #include <ESPAsync_WiFiManager_Lite.h>
 
 #if ESP8266