If enabled in user_config.h this will trigger the OMG to update it's firmware from the link
provided in the MQTT message.
Example message:
{\"version\":\"test\",\"password\":\"OMGPASSWORD\",\"url\":\"https://github.com/1technophile/OpenMQTTGateway/releases/download/v0.9.6/esp32dev-ble-cont-firmware.bin\"}
If the firmware version in the message is not the same as the current OMG version the device will self update using the link in the url of the message.
Using NimBLE requires less resources than bluedroid so it is much less beneficial to
deinitialize the stack. Instead this initializes it once in initial setup and only deinitializes
before entering deep sleep.
h2zero