Native Xiaomi LYWSD02 support!

Currently, I have to use MQTT for reaching this BLE sensor.

For more info:

Nice to have:
This very beautiful stuff has a digital clock. Generally, I love it, BUT if I don’t refresh the clock by the official Mi Home app, the time will seek +2 min / 1 month…

If HA mitemp_bt already supports that “other” (round one) Xiaomi BLE sensor, why there is no support for LYWSD02?
Yes, I know that ESPHome and OpenMQTTGateway supports this product, but… I don’t have those.