Add support for T100 motion sensor (#1079)

Add support for T100 motion sensor.
Thanks to @DarthSonic for the fixture file!

kasa/tests/smart/modules/test_motionsensor.py

@@ -0,0 +1,28 @@
+import pytest
+
+from kasa import Module, SmartDevice
+from kasa.tests.device_fixtures import parametrize
+
+motion = parametrize(
+    "is motion sensor", model_filter="T100", protocol_filter={"SMART.CHILD"}
+)
+
+
+@motion
+@pytest.mark.parametrize(
+    "feature, type",
+    [
+        ("motion_detected", bool),
+    ],
+)
+async def test_motion_features(dev: SmartDevice, feature, type):
+    """Test that features are registered and work as expected."""
+    motion = dev.modules.get(Module.MotionSensor)
+    assert motion is not None
+
+    prop = getattr(motion, feature)
+    assert isinstance(prop, type)
+
+    feat = dev.features[feature]
+    assert feat.value == prop
+    assert isinstance(feat.value, type)