[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).

[jumate]

***** Start cleaning with the active room parameters in square brackets

action: xiaomi_miot.call_action
data:
entity_id: vacuum.xiaomi_b108gl_ca95_robot_cleaner
siid: 2
aiid: 13
params:
- "{"room":[9,12]}"

***** Set up rooms cleaning
action: xiaomi_miot.call_action
data:
entity_id: vacuum.xiaomi_b108gl_ca95_robot_cleaner
siid: 2
aiid: 10
params:
- "{"room_attrs":[{"id":8,"room_name":"Alex","fan_level":2,"water_level":1,"clean_mode":1,"clean_times":1,"mop_mode":0,"on":true}]}"

***** Start custom cleaning
action: xiaomi_miot.call_action
data:
entity_id: vacuum.xiaomi_b108gl_ca95_robot_cleaner
siid: 6
aiid: 7
params: []