There is the generic thermostat, but I don’t see a generic climate, not even on HACS.
Usually the generic thermostat is quite nice, but for my use case it won’t work. I need a copy of a real climate entity for user input in the UI, which I can then use to set the real climate entity using automations. Mostly the values would just be copied over, but when the “auto” mode is enabled, the automation would use other data to determine what to set the real AC to. I’d also add some more goodies, like lowering the manually set target temperature while excess solar is available.
At the moment I have a switch to disable my automation when I want to manually control my AC, which is not ideal as it mixes generated and manual settings, is error-prone, and doesn’t look as nice and integrated.