support for auto discover of genBinaryOutput

[tomaszduda23]

esphome/esphome#7340 adds zigbee support to esphome on nrf52840. genBinaryOutput clusters were implemented in hope that it would be discovered automatically. Auto discovery works for genBinaryInput but it does not for output esphome/esphome#7340 (comment). genBinaryOutput was implemented instead of genOnOff since it support description which could be used to distinguished clusters after #160 gets implemented.

[puddly]

Can you provide sample firmware for something like the nRF52840 to test this out?

[tomaszduda23]

How would you like to flash it? nRF52840 supports two boot loaders MCUboot and Adafruit (https://deploy-preview-4111--esphome.netlify.app/components/nrf52).

For testing you would also need factory reset. There are few possibilities:

1. if you have SWD you can just erase memory and re-flash
2. factory reset by GPIO (I need pin number based on your board)
3. I could factory reset each time when power on