Add media_player to xiaomi_miio for Xiaomi Gateway (and talk from HA app via Xiaomi Gateway)

It is possible to play any audio source on Xiaomi Gateway
‘{“id”:1,“method”:“play_specify_fm”,“params”:{“id”:527782369,“type”:0,“url”:“http://someserver/somefile.m3u8”}}’

I have already submitted the following https://github.com/rytilahti/python-miio/issues/740

Please add media_player to xiaomi_miio integration to play any audio source similar to

It would be very useful to add the ability to the Home Assistant app to say something via Xiaomi Gateway!