Add support to Yeelight YLKG08Y dimmer Switch

[lelemm]

Describe the problem you have/What new integration you would like
The Yeelight YLKG08Y dimmer switch to be supported by esphome

Please describe your use case for this integration and alternatives you've tried:
Use the sensor created from esphome to control other integrations with this dimmer switch.
Tried to use a bluetooth dongle attached to the home assistant, but the signal is too weak. Need something near to get the bluetooth signal (like esphome).

Additional context
This is already supported by https://github.com/custom-components/ble_monitor . Probably make the port to esphome easier.
Check this thread:
nccchirag/yeelight-ble-rotary-dimmer#1
This dimmer switch uses encrypted legacy protocol (old MiBeacon protocol) that must be supported by the esphome in order to work
https://github.com/custom-components/ble_monitor/blob/2404c27d2993599ebe8846b2471d814ee9af368e/custom_components/ble_monitor/ble_parser/xiaomi.py#L717

[nagyrobi]

Please see https://github.com/dentra/esphome-components/tree/master/components/miot_ylai003, does this work for you?
Possibly related to #1230

[lelemm]

Hi. Tried the component. Does not work. This all it gets logged when used a click or rotary

[15:54:24][D][miot:146]: Got MiBeacon: 58.30.B6.03.13.04.FE.C5.41.24.F8.05.A8.7C.61.65.FE.01.00.00.BD (21)
[15:54:24][D][miot:149]: [03B6] (encrypted) F8:24:41:C5:FE:04 RSSI=-48 ▂▄▆█
[15:54:25][D][miot:146]: Got MiBeacon: 58.30.B6.03.14.04.FE.C5.41.24.F8.31.E0.D2.E6.3D.0B.01.00.00.A7 (21)
[15:54:25][D][miot:149]: [03B6] (encrypted) F8:24:41:C5:FE:04 RSSI=-47 ▂▄▆█
[15:54:27][D][miot:146]: Got MiBeacon: 58.30.B6.03.1B.04.FE.C5.41.24.F8.9A.02.1D.2F.2C.F4.01.00.00.ED (21)
[15:54:27][D][miot:149]: [03B6] (encrypted) F8:24:41:C5:FE:04 RSSI=-58 ▂▄▆█
[15:54:29][D][miot:146]: Got MiBeacon: 58.30.B6.03.1C.04.FE.C5.41.24.F8.1E.1D.01.3F.EB.7A.01.00.00.45 (21)
[15:54:29][D][miot:149]: [03B6] (encrypted) F8:24:41:C5:FE:04 RSSI=-60 ▂▄▆█
[15:54:30][D][miot:146]: Got MiBeacon: 58.30.B6.03.1C.04.FE.C5.41.24.F8.1E.1D.01.3F.EB.7A.01.00.00.45 (21)
[15:54:30][D][miot:149]: [03B6] (encrypted) F8:24:41:C5:FE:04 RSSI=-48 ▂▄▆█
[15:54:32][D][miot:146]: Got MiBeacon: 58.30.B6.03.20.04.FE.C5.41.24.F8.88.E3.FD.53.6D.EF.01.00.00.F6 (21)
[15:54:32][D][miot:149]: [03B6] (encrypted) F8:24:41:C5:FE:04 RSSI=-64 ▂▄▆█
[15:54:32][D][miot:146]: Got MiBeacon: 58.30.B6.03.21.04.FE.C5.41.24.F8.A7.49.BF.75.6F.59.01.00.00.6C (21)
[15:54:32][D][miot:149]: [03B6] (encrypted) F8:24:41:C5:FE:04 RSSI=-48 ▂▄▆█
[15:54:33][D][miot:146]: Got MiBeacon: 58.30.B6.03.23.04.FE.C5.41.24.F8.2E.6B.CC.0D.C8.A6.01.00.00.9B (21)
[15:54:33][D][miot:149]: [03B6] (encrypted) F8:24:41:C5:FE:04 RSSI=-52 ▂▄▆█
[15:54:35][D][miot:146]: Got MiBeacon: 58.30.B6.03.28.04.FE.C5.41.24.F8.69.82.72.4B.E8.2A.01.00.00.72 (21)
[15:54:35][D][miot:149]: [03B6] (encrypted) F8:24:41:C5:FE:04 RSSI=-48 ▂▄▆█
[15:54:49][D][miot:146]: Got MiBeacon: 58.30.B6.03.2D.04.FE.C5.41.24.F8.26.B8.54.12.C9.7D.01.00.00.3D (21)
[15:54:50][D][miot:149]: [03B6] (encrypted) F8:24:41:C5:FE:04 RSSI=-60 ▂▄▆█
[15:54:50][D][miot:146]: Got MiBeacon: 58.30.B6.03.2E.04.FE.C5.41.24.F8.25.0B.37.AC.07.F8.01.00.00.79 (21)
[15:54:50][D][miot:149]: [03B6] (encrypted) F8:24:41:C5:FE:04 RSSI=-49 ▂▄▆█
[15:54:51][D][miot:146]: Got MiBeacon: 58.30.B6.03.31.04.FE.C5.41.24.F8.12.54.0C.0C.C1.25.01.00.00.65 (21)
[15:54:51][D][miot:149]: [03B6] (encrypted) F8:24:41:C5:FE:04 RSSI=-61 ▂▄▆█

[lelemm]

This one
https://github.com/dentra/esphome-components/tree/master/components/miot_ylkg0xyl
works!