* maxcube: Make it possible to return to auto mode
It's currently not possible to switch back to auto (schedule) mode after
changing to manual or vacation. Add `PRESET_NONE` to list of presets
that will return thermostat back into auto (schedule) mode.
Additionally, use `PRESET_AWAY` instead of custom preset name for
vacation mode.
* maxcube: Provide `hvac_action` based on valve state
Not supported for wall thermostats.
* maxcube: Add support for Comfort, Eco, Off and On modes
Off is mapped to HVAC_OFF, while On - to HVAC_HEAT.
* maxcube: Add `hvac_action` support for wall thermostats
We check all thermostats in the same room as the wall thermostat. If at
least one of them has its valve open - the room is being heated.
* maxcube: Expose valve position as state attribute
Also fix a small logical error in `hvac_action`.
* maxcube: Fix linter errors and formatting
* maxcube: Adjust mapping between MAX! and HA modes and presets
MAX! 'Manual' mode now corresponds to 'Heating' mode of HA. MAX! 'Eco'
and 'Comfort' temperatures are 'Heating' mode presets. MAX! 'On' mode is
now a 'Heating' preset, too.
* maxcube: Address review comments
19a0a7029f