tuya_thermostat (TS0601): modes changed to presets and two other fixes

[mgrom]

This PR is related to: Koenkk/zigbee2mqtt#4070

• window detection fix - before there was no way to change this value through mqtt command,
• changed preset to away preset params - something named preset was actually away preset mode params (temp, and duration in days),
• modes changed to presets - modes in home assistant are fixed, so the best to be flexible is to use presets (ha calls them hold_modes)

[Koenkk]

I've just merged #1461 which conflicts with this pr, can you rebase this pr?

Note to self: after this merge Koenkk/zigbee2mqtt#4070

[mgrom]

No problem, I'll do it today.

[mgrom]

@Koenkk I'm only a bit worried about this change:
7b0c659#diff-63bec0da09650ada978527cc004902e2R316
Because it can break currently working installations. As I mentioned in other PR, homeassistant is not allowing to add any custom system modes, so to be able to control mode we should use presets instead, which are more flexible.
But this change can make some damage for user who currently use this integration without homeassistant.
Any ideas how to proceed?

Maybe return both preset and system_mode in the same message like:

return {preset: utils.getMetaValue(msg.endpoint, model, 'tuyaThermostatPreset')[dataAsDecNumber],
   system_mode: utils.getMetaValue(msg.endpoint, model, 'tuyaThermostatSystemMode')[dataAsDecNumber],
};

[Koenkk]

Returning both is fine!

[mgrom]

I think it's ready @Koenkk

[Koenkk]

Thanks!