[Feature]: replace the thermostat icon at climate-card with a more recognizable one (list?)

[igorsantos07]

Requirements

• I have updated Mushroom to the latest available version
• I did a search to see if there is a similar issue or if a pull request is open.

Is your feature request related to a problem?

This seems quite small, but two users on my home asked "what the heck is this icon on the side of the AC card"?
At the start, I thought it was some sort of odd steering wheel, and just answered "oh, that's where you select the modes... dry mode, cool mode, fan mode, etc".

But, as it usually goes with us devs, days passed by, and I got more and more curious. Ended up in the source code and discovered it is supposed to look like a thermostat!
Well, this might be recognizable by North-american and European folks, but thermostats do not exist in warmer climates - at least I never saw one here in Brazil, and I've been to a couple (not many, though) of chilly places around my country. I've lived in Halifax, Canada for a year as well and the thermostats I stumbled upon were different (possibly, older).

Bottom-line: that icon is mostly meaningless for many people, specially when using it with standalone AC units - they (mostly?) do not have visible thermostats or any round interface that could be recognizable like that.

Describe the solution you'd like

I would propose replacing that icon with a more recognizable one; the ones that come first to my mind are list-related icons. They pose a contrast with the temperature control, given they will show the user a list of various options (of modes) to select from.

This could be the usual format-list-bulleted, or format-list-bulleted-type (to convey different options).

Another, more generic option would be simply the usual dots-horizontal, which both look like the modes showing side-by-side, and just means "more options are hidden here", considering the default is selecting the temperature, when both controls are enabled.

Describe alternatives you've considered

No response

Additional context

An alternative to changing the icon for everyone would be to replace it only when the device has no heating mode, which I guess would usually mean an AC. Even so, many standalone AC units do have heating mode, even though they don't sport a thermostat interface. However, I can't see an attribute on my LG ACs which describe it as an AC (besides the editable icon), differently from my TVs and projector, which sport a device_class: tv (although the Google Nest devices don't advertise themselves as speakers).