[OTA] Capability to disable Firmware Update on ESP32 WEB (#1621)

* disabling  Firmware Update on ESP32

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Co-authored-by: Bert Wynants <bwynants+drupal-git@gmail.com>

environments.ini

@@ -117,6 +117,7 @@ build_flags =
   '-DDEEP_SLEEP_IN_US=120000000' ; Deep sleep for a period of time to conserve battery
   '-DESP32_EXT0_WAKE_PIN=GPIO_NUM_14' ;Should a water leak be detected immediatly wake the ESP32 and report the problem
   '-DESP32_EXT0_WAKE_PIN_STATE=0' ;Should a water leak be detected immediatly wake the ESP32 and report the problem, sensor state to look for wakeup
+  '-UMQTT_HTTPS_FW_UPDATE' ;disable HTTPS firmware updating
 [env:esp32dev-rf]
 platform = ${com.esp32_platform}
 board = esp32dev