Add Xiaomi Smart Standing Air Circulation Fan (xiaomi.fan.p51) support

[N0b0dy67]

Hello,

Can you add the support for Xiaomi Smart Standing Air Circulation Fan (xiaomi.fan.p51) ?

Thank you very much.

[syssi]

https://miot-spec.org/miot-spec-v2/instance?type=urn:miot-spec-v2:device:fan:0000A005:xiaomi-p51:1