Feature request: dehumidifier mode

[ejohb]

I use thermostat controls to control humidity instead of temperature, e.g. where the sensor entity is a humidity sensor, and the switch entities are a humidifier and a dehumidifier.

This all works perfectly with the existing logic. However it would be really nice if there could be an humidifier_mode: true setting that would have the following purely cosmetic changes:

• Display the unit of measure as "%", (i.e. Percent Humidity)
• Show "Humidifying"/"Dehumidifying" instead of "Heating"/"Cooling"
• Show a relevant icon (e.g. mdi:water-percent) instead of the snowflake/flame.