Add vacuum speaker controls (#1332)

Implements `speaker` and adds the following features:
* `volume`  to control the speaker volume
* `locate` to play "I'm here sound"

tests/smart/modules/test_speaker.py

@@ -0,0 +1,71 @@
+from __future__ import annotations
+
+import pytest
+from pytest_mock import MockerFixture
+
+from kasa import Module
+from kasa.smart import SmartDevice
+
+from ...device_fixtures import get_parent_and_child_modules, parametrize
+
+speaker = parametrize(
+    "has speaker", component_filter="speaker", protocol_filter={"SMART"}
+)
+
+
+@speaker
+@pytest.mark.parametrize(
+    ("feature", "prop_name", "type"),
+    [
+        ("volume", "volume", int),
+    ],
+)
+async def test_features(dev: SmartDevice, feature: str, prop_name: str, type: type):
+    """Test that features are registered and work as expected."""
+    speaker = next(get_parent_and_child_modules(dev, Module.Speaker))
+    assert speaker is not None
+
+    prop = getattr(speaker, prop_name)
+    assert isinstance(prop, type)
+
+    feat = speaker._device.features[feature]
+    assert feat.value == prop
+    assert isinstance(feat.value, type)
+
+
+@speaker
+async def test_set_volume(dev: SmartDevice, mocker: MockerFixture):
+    """Test speaker settings."""
+    speaker = next(get_parent_and_child_modules(dev, Module.Speaker))
+    assert speaker is not None
+
+    call = mocker.spy(speaker, "call")
+
+    volume = speaker._device.features["volume"]
+    assert speaker.volume == volume.value
+
+    new_volume = 15
+    await speaker.set_volume(new_volume)
+
+    call.assert_called_with("setVolume", {"volume": new_volume})
+
+    await dev.update()
+
+    assert speaker.volume == new_volume
+
+    with pytest.raises(ValueError, match="Volume must be between 0 and 100"):
+        await speaker.set_volume(-10)
+
+    with pytest.raises(ValueError, match="Volume must be between 0 and 100"):
+        await speaker.set_volume(110)
+
+
+@speaker
+async def test_locate(dev: SmartDevice, mocker: MockerFixture):
+    """Test the locate method."""
+    speaker = next(get_parent_and_child_modules(dev, Module.Speaker))
+    call = mocker.spy(speaker, "call")
+
+    await speaker.locate()
+
+    call.assert_called_with("playSelectAudio", {"audio_type": "seek_me"})