Add humidifiers to the library

Thanks for asking for this! Humidifiers and dehumidifiers are now tiles, in Tessera 0.4.69 (firmware 0.42.0).

A dehumidifier on a smart plug with Home Assistant's Generic hygrostat, like yours, works as it is:

• The tile shows what it is doing and the humidity it measures, for example "Drying · 68%". It is blue while it is on and grey while it is off, with Home Assistant's own icons.
• A tap opens its card: the power key, and the target humidity big in Home Assistant's ring between − and +. While it is drying, the ring shows how far the humidity still has to go.
• If your hygrostat has away_humidity in its YAML, Home Assistant gives it the Normal and Away modes, and the card shows them as two keys.
• On a double-width tile you can choose the humidity − / +, a slider, the mode keys or an on/off switch. A tile of two rows shows − / + with the modes under it, and a tap on its round icon turns it on or off.

Update the add-on, then update the screen's firmware from the add-on. In the editor's library you find it under the new Humidifiers filter.

I checked it with the firmware's own drawing on several screens, but not yet with a real dehumidifier. If something looks or works wrong with yours, please let me know here.

Got a screen running? Tell others which board you have and what works on the Tessera website. It helps everyone pick a screen that works.

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