Add ESPHome climate support

[OttoWinter]

Description:

Adds climate device support for esphome. Not much happening here, service calls are just forwarded and state is received as usual

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.

Plz ... merge my PR for 0.92 ... 💛

[awarecan]

away_mode is an optional, so that we need check if this feature enabled before send command

[OttoWinter]

away_mode is an optional, so that we need check if this feature enabled before send command

@awarecan What do you mean by that? The state attribute is already filtered here: https://github.com/home-assistant/home-assistant/blob/dev/homeassistant/components/climate/__init__.py#L267

[awarecan]

There is no filter when call turn_away_mode_on service
https://github.com/home-assistant/home-assistant/blob/55c8417ec0530a9c014266215e9798188231e237/homeassistant/components/climate/__init__.py#L531

[OttoWinter]

@awarecan

For away mode command, that should ultimately be handled in climate base? Anyway, attempting to send an away command would just result in a warning in the esphome log like "This climate device does not support setting away mode". ESPHome also does validation of commands on the esp side, so that's not a problem.

I'll wait for #22878 and then apply the same things for climate in the base.

[balloob]

22878 merged.

[MartinHjelmare]

Looks good!

[MartinHjelmare]

Should we merge?