Add kodi

[technicalpickles]

As part of https://github.com/technicalpickles/picklehome/issues/16 ... I'd merge it, but I started having some networking problems with the wifi.

[technicalpickles]

I ended up starting to implement the fireplace switch described in https://github.com/technicalpickles/picklehome/issues/16 since I needed a way to test the component working.

There are some details to work out with the HDMI-CEC to automate turning the TV on/off too. There's cec-client discussed in a few places, but they haven't been able to get it working:

• http://kodi.wiki/view/Raspberry_Pi_FAQ#TV_is_not_detected_unless_powered_on_first
• https://raspberrypi.stackexchange.com/questions/8698/how-can-my-raspberry-pi-turn-on-off-my-samsung-tv
• https://community.home-assistant.io/t/turning-a-tv-on-off-via-kodi-cec-libreelec-no-hass-device-attached/5944

[technicalpickles]

I'm seeing a ton of these in the logs:

[homeassistant.components.media_player.kodi] Unable to connect to Kodi via websocket

Either should fix whatever misconfiguration is causing, or see if there's a way to disable websocket support.

[technicalpickles]

This PR got a bit away from me, and it's not perfect, but it works well enough for now 😬 Going to 🚢 and keep iterating