Gateway: add name + model property to subdevice & add loads of subdevices

miio/gateway.py

@@ -647,6 +647,11 @@ def device_type(self):
         """Return the device type name."""
         return self.type.name
 
+    @property
+    def name(self):
+        """Return the name of the device."""
+        return f"{self.device_type}-{self.sid}"
+
     @property
     def model(self):
         """Return the device model."""