Initial support for vacuums (clean module) (#944)

Adds support for clean module:
- Show current vacuum state
- Start cleaning (all rooms)
- Return to dock
- Pausing & unpausing
- Controlling the fan speed

---------

Co-authored-by: Steven B <51370195+sdb9696@users.noreply.github.com>

kasa/smart/modules/__init__.py

@@ -7,6 +7,7 @@ from .batterysensor import BatterySensor
 from .brightness import Brightness
 from .childdevice import ChildDevice
 from .childprotection import ChildProtection
+from .clean import Clean
 from .cloud import Cloud
 from .color import Color
 from .colortemperature import ColorTemperature
@@ -66,6 +67,7 @@ __all__ = [
     "TriggerLogs",
     "FrostProtection",
     "Thermostat",
+    "Clean",
     "SmartLightEffect",
     "OverheatProtection",
     "HomeKit",