Use brightness module for smartbulb (#853)

Moves one more feature out from the smartbulb class

kasa/smart/modules/brightness.py

@@ -11,6 +11,10 @@ if TYPE_CHECKING:
     from ..smartdevice import SmartDevice
 
 
+BRIGHTNESS_MIN = 1
+BRIGHTNESS_MAX = 100
+
+
 class Brightness(SmartModule):
     """Implementation of brightness module."""
 
@@ -25,8 +29,8 @@ class Brightness(SmartModule):
                 container=self,
                 attribute_getter="brightness",
                 attribute_setter="set_brightness",
-                minimum_value=1,
-                maximum_value=100,
+                minimum_value=BRIGHTNESS_MIN,
+                maximum_value=BRIGHTNESS_MAX,
                 type=FeatureType.Number,
             )
         )
@@ -43,4 +47,12 @@ class Brightness(SmartModule):
 
     async def set_brightness(self, brightness: int):
         """Set the brightness."""
+        if not isinstance(brightness, int) or not (
+            BRIGHTNESS_MIN <= brightness <= BRIGHTNESS_MAX
+        ):
+            raise ValueError(
+                f"Invalid brightness value: {brightness} "
+                f"(valid range: {BRIGHTNESS_MIN}-{BRIGHTNESS_MAX}%)"
+            )
+
         return await self.call("set_device_info", {"brightness": brightness})