[New device] Xiaomi vacuum S20+

[Matssa56]

Device information:

• Name(s) of the device: Xiaomi Robot Vacuum S20+

• Link:
  Data spec used for MIOT : https://home.miot-spec.com/spec/xiaomi.vacuum.b108gl
  Official webpage : https://www.mi.com/fr/product/xiaomi-robot-vacuum-s20-plus/?srsltid=AfmBOooKtkKD3e4vLOHL_lMVetlUW_OilFwjXu9PvAho3XzDmLOHaHXN

• Model: [e.g., lumi.gateway.v3] xiaomi.vacuum.b108gl

• Firmware version: 4.3.9_0170

Additional context
If you know already about potential commands or any other useful information to add support for the device, please add that information here.
The robot already works with the miot auto HACS module under Home Assistant (https://github.com/al-one/hass-xiaomi-miot) however I would prefear to include it in the official MIIO Home Assistant integration (see home-assistant/core#126071).