Fixing deprecation warnings for 2025.1

[jringuette]

Hi there, trying to fix warnings prior to release of 2025.1

First off, i'm not familiar with Python and all its ecosystem, i've been programming mainly in java for the last 25 years, so if you want me to change anything, just let me know.

These are the warnings i'm getting when booting a recent 2024 build of HASS:

2024-06-23 00:23:08.985 WARNING (ImportExecutor_0) [homeassistant.const] TEMP_CELSIUS was used from schluter, this is a deprecated constant which will be removed in HA Core 2025.1. Use UnitOfTemperature.CELSIUS instead, please report it to the author of the 'schluter' custom integration
2024-06-23 00:23:08.990 WARNING (ImportExecutor_0) [homeassistant.const] ENERGY_KILO_WATT_HOUR was used from schluter, this is a deprecated constant which will be removed in HA Core 2025.1. Use UnitOfEnergy.KILO_WATT_HOUR instead, please report it to the author of the 'schluter' custom integration
2024-06-23 00:23:08.991 WARNING (ImportExecutor_0) [homeassistant.const] POWER_WATT was used from schluter, this is a deprecated constant which will be removed in HA Core 2025.1. Use UnitOfPower.WATT instead, please report it to the author of the 'schluter' custom integration
2024-06-23 00:23:08.993 WARNING (ImportExecutor_0) [homeassistant.const] TEMP_CELSIUS was used from schluter, this is a deprecated constant which will be removed in HA Core 2025.1. Use UnitOfTemperature.CELSIUS instead, please report it to the author of the 'schluter' custom integration
2024-06-23 00:23:09.001 WARNING (MainThread) [homeassistant.components.climate] Entity None (<class 'custom_components.schluter.climate.SchluterThermostat'>) implements HVACMode(s): heat, auto, off and therefore implicitly supports the turn_on/turn_off methods without setting the proper ClimateEntityFeature. Please create a bug report at https://github.com/Ingos11/ha-schluter/issues

I've changed the constants as suggested for the first four items.

For the last one, i've found this blog post explaining what needed to be done. Looking at the code for the turn_on and turn_off show indeed that it will work.

[jringuette]

The 2024.5.3 was complaining it needed python 3.12

[jringuette]

Don't know if this is required

[jringuette]

Don't know if this is required

[jringuette]

Hi @IngoS11,
did you had any time to look at this PR? Anything i can do to get that merged?
Thank you