Add cli interface for yeelight devices

[rytilahti]

This extends yeelight support to allow controlling yeelight devices with miiocli, in case someone prefers this instead of using the developer mode.

Usage: miiocli yeelight [OPTIONS] COMMAND [ARGS]...

Options:
  --ip TEXT     [required]
  --token TEXT  [required]
  --help        Show this message and exit.

Commands:
  info                      Get miIO protocol information from the device.
  off                       Power off.
  on                        Power on.
  raw_command               Send a raw command to the device.
  set_brightness            Set brightness.
  set_color_temp            Set color temp in kelvin.
  set_default               Set current state as default.
  set_developer_mode        Enable or disable the developer mode.
  set_name                  Set an internal name for the bulb.
  set_save_state_on_change  Enable or disable saving the state on changes.
  status                    Retrieve properties.
  toggle                    Toggle bulb state.

This can also be helpful for those who want to enable the developer mode without installing the app and binding the bulb to the cloud. Slightly related to home-assistant/core#17699 this could use some documentation for potential users.

[houndci-bot]

'.click_common.EnumType' imported but unused

[coveralls]

Coverage decreased (-0.03%) to 73.133% when pulling 3e43c14 on extend_yeelight_support into 3a98ecb on master.

[coveralls]

Coverage decreased (-0.03%) to 73.133% when pulling 493b323 on extend_yeelight_support into 3a98ecb on master.

[syssi]

Awesome!

[pieonboard]

Any chance to cut the 0.4.3 release?