Add Schedy UI

Hi,

I would want to create a dynamic heating scheduler. I now there is Schedy but it’s only a backend and I would need an UI frontend as my work hours are constantly changing.

If it can helps, I found a project started a few years ago on ESP8266 with a HTTP UI.

https://github.com/emoncms/development/tree/master/experimental/control/open_thermostat_scheduler

Thanks