StrEnum deprecated use enum.StrEnum instead

[cgfm]

Logger: homeassistant.backports.enum
source: helpers/deprecation.py:197

StrEnum was used from tplink_easy_smart, this is a deprecated alias which will be removed in HA Core 2025.5. Use enum.StrEnum instead, please report it to the author of the 'tplink_easy_smart' custom integration

[ef1970]

I did a quick fix here - works until someone looks at it.

In services.py, change:
from homeassistant.backports.enum import StrEnum
to
from enum import StrEnum

Also, might want to change this in sensor.py:

from homeassistant.const import POWER_WATT
to
from homeassistant.const import UnitOfPower

and

native_unit_of_measurement=POWER_WATT,
to
native_unit_of_measurement=UnitOfPower.WATT,

from this commit.