Support for new ks240 fan/light wall switch (#839)

In order to support the ks240 which has children for the fan and light
components, this PR adds those modules at the parent level and hides the
children so it looks like a single device to consumers. It also decides
which modules not to take from the child because the child does not
support them even though it say it does. It does this for now via a
fixed list, e.g. `Time`, `Firmware` etc.

Also adds fixtures from two versions and corresponding tests.

kasa/tests/smart/modules/test_fan.py

@@ -1,18 +1,17 @@
 from pytest_mock import MockerFixture
 
 from kasa import SmartDevice
-from kasa.smart.modules import FanModule
 from kasa.tests.device_fixtures import parametrize
 
-fan = parametrize(
-    "has fan", component_filter="fan_control", protocol_filter={"SMART.CHILD"}
-)
+fan = parametrize("has fan", component_filter="fan_control", protocol_filter={"SMART"})
 
 
 @fan
 async def test_fan_speed(dev: SmartDevice, mocker: MockerFixture):
     """Test fan speed feature."""
-    fan: FanModule = dev.modules["FanModule"]
+    fan = dev.modules.get("FanModule")
+    assert fan
+
     level_feature = fan._module_features["fan_speed_level"]
     assert (
         level_feature.minimum_value
@@ -22,7 +21,7 @@ async def test_fan_speed(dev: SmartDevice, mocker: MockerFixture):
 
     call = mocker.spy(fan, "call")
     await fan.set_fan_speed_level(3)
-    call.assert_called_with("set_device_info", {"fan_sleep_level": 3})
+    call.assert_called_with("set_device_info", {"fan_speed_level": 3})
 
     await dev.update()
 
@@ -33,7 +32,8 @@ async def test_fan_speed(dev: SmartDevice, mocker: MockerFixture):
 @fan
 async def test_sleep_mode(dev: SmartDevice, mocker: MockerFixture):
     """Test sleep mode feature."""
-    fan: FanModule = dev.modules["FanModule"]
+    fan = dev.modules.get("FanModule")
+    assert fan
     sleep_feature = fan._module_features["fan_sleep_mode"]
     assert isinstance(sleep_feature.value, bool)