Add Dimmer Configuration Support (#1484)

kasa/iot/modules/__init__.py

@@ -4,6 +4,7 @@ from .ambientlight import AmbientLight
 from .antitheft import Antitheft
 from .cloud import Cloud
 from .countdown import Countdown
+from .dimmer import Dimmer
 from .emeter import Emeter
 from .led import Led
 from .light import Light
@@ -20,6 +21,7 @@ __all__ = [
     "Antitheft",
     "Cloud",
     "Countdown",
+    "Dimmer",
     "Emeter",
     "Led",
     "Light",