Add childsetup module to smartcam hubs (#1469)

Add the `childsetup` module for `smartcam` hubs to allow pairing and unpairing child devices.

kasa/smart/modules/childsetup.py

@@ -48,7 +48,10 @@ class ChildSetup(SmartModule):
         detected = await self._get_detected_devices()
 
         if not detected["child_device_list"]:
-            _LOGGER.info("No devices found.")
+            _LOGGER.warning(
+                "No devices found, make sure to activate pairing "
+                "mode on the devices to be added."
+            )
             return []
 
         _LOGGER.info(
@@ -63,7 +66,7 @@ class ChildSetup(SmartModule):
 
     async def unpair(self, device_id: str) -> dict:
         """Remove device from the hub."""
-        _LOGGER.debug("Going to unpair %s from %s", device_id, self)
+        _LOGGER.info("Going to unpair %s from %s", device_id, self)
 
         payload = {"child_device_list": [{"device_id": device_id}]}
         return await self.call("remove_child_device_list", payload)

kasa/smart/smartdevice.py

@@ -691,12 +691,8 @@ class SmartDevice(Device):
         """
         self._info = info
 
-    async def _query_helper(
-        self, method: str, params: dict | None = None, child_ids: None = None
-    ) -> dict:
-        res = await self.protocol.query({method: params})
-
-        return res
+    async def _query_helper(self, method: str, params: dict | None = None) -> dict:
+        return await self.protocol.query({method: params})
 
     @property
     def ssid(self) -> str: