Add LightEffectModule for dynamic light effects on SMART bulbs (#887)

Support the `light_effect` module which allows setting the effect to Off
or Party or Relax. Uses the new `Feature.Type.Choice`. Does not
currently allow editing of effects.

kasa/tests/test_cli.py

@@ -689,6 +689,17 @@ async def test_feature(mocker, runner):
     assert res.exit_code == 0
 
 
+async def test_features_all(discovery_mock, mocker, runner):
+    """Test feature command on all fixtures."""
+    res = await runner.invoke(
+        cli,
+        ["--host", "127.0.0.123", "--debug", "feature"],
+        catch_exceptions=False,
+    )
+    assert "== Features ==" in res.output
+    assert res.exit_code == 0
+
+
 async def test_feature_single(mocker, runner):
     """Test feature command returning single value."""
     dummy_device = await get_device_for_fixture_protocol(
@@ -736,7 +747,7 @@ async def test_feature_set(mocker, runner):
     )
 
     led_setter.assert_called_with(True)
-    assert "Setting led to True" in res.output
+    assert "Changing led from False to True" in res.output
     assert res.exit_code == 0
 
 
@@ -762,14 +773,14 @@ async def test_feature_set_child(mocker, runner):
             "--child",
             child_id,
             "state",
-            "False",
+            "True",
         ],
         catch_exceptions=False,
     )
 
     get_child_device.assert_called()
-    setter.assert_called_with(False)
+    setter.assert_called_with(True)
 
     assert f"Targeting child device {child_id}"
-    assert "Setting state to False" in res.output
+    assert "Changing state from False to True" in res.output
     assert res.exit_code == 0