ESPHome for LoRaTap single relay

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# This program was created to replace the existing chip in cheaps "LoRaTap" smart relays
# that I purchased for a few dollars on AliExpress, and for which I found schematics on the internet.
# The onboard chip could not be reprogrammed with ESPHome
# and forced me to use Tuya's cloud service to integrate it into my home automation system.
# So, I decided to free these little devices and also added some personal mods.
# An ESP01M would have been a better choice for this project, but I didn't have one available at the time.
# Features:
# - The blue LED indicates the state of the relay.
# - The red LED provides information about the relay status:
# - Steady: Boot in progress.
# - Fast blinking: No Wi-Fi connection.
# - Slow blinking: Wi-Fi connected, but weak signal.
# - "Heartbeat" blinking: Wi-Fi connection is okay.
# - The button allows manual switching of the relay state.
# Obviously, Home Assistant can control the relay and provides some additional inf