adds esp32 core temp, not enabled

the core temp sensors are not calibrated in production atm, they are large offsets form chip to chip and are useful for relative temp swings only. Until the IDF comes up with a new temp sense, this is commented out.

WiFiManager.cpp

@@ -1408,6 +1408,7 @@ void WiFiManager::handleInfo() {
       F("cpufreq"),
       F("freeheap"),
       F("lastreset"),
+      // F("temp"),
       F("wifihead"),
       F("apip"),
       F("apmac"),
@@ -1617,6 +1618,14 @@ String WiFiManager::getInfoData(String id){
     p.replace(FPSTR(T_1),WiFi.getAutoConnect() ? FPSTR(S_enable) : FPSTR(S_disable));
   }
   #endif
+  #ifdef ESP32
+  else if(id==F("temp")){
+    // temperature is not calibrated, varying large offsets are present, use for relative temp changes only
+    p = FPSTR(HTTP_INFO_temp);
+    p.replace(FPSTR(T_1),(String)temperatureRead());
+    p.replace(FPSTR(T_2),(String)((temperatureRead()+32)*1.8));
+  }
+  #endif
   return p;
 }