Add childprotection module (#1141)

When turned on, rotating the thermostat will not change the target
temperature.

kasa/smart/modules/__init__.py

@@ -6,6 +6,7 @@ from .autooff import AutoOff
 from .batterysensor import BatterySensor
 from .brightness import Brightness
 from .childdevice import ChildDevice
+from .childprotection import ChildProtection
 from .cloud import Cloud
 from .color import Color
 from .colortemperature import ColorTemperature
@@ -40,6 +41,7 @@ __all__ = [
     "HumiditySensor",
     "TemperatureSensor",
     "TemperatureControl",
+    "ChildProtection",
     "ReportMode",
     "AutoOff",
     "Led",