tests: add type annotations to Smart tests (#1686)

Add type annotations across all 'smart' tests, enabling mypy to check test function bodies, catching type errors that were previously hidden.

tests/smart/modules/test_triggerlogs.py

@@ -10,7 +10,7 @@ triggerlogs = parametrize(
 
 
 @triggerlogs
-async def test_trigger_logs(dev: Device):
+async def test_trigger_logs(dev: Device) -> None:
     """Test that features are registered and work as expected."""
     triggerlogs = dev.modules.get(Module.TriggerLogs)
     assert triggerlogs is not None