Add effect support for light strips (#293)

* Add effect support for KL430

* KL400 supports effects

* Add KL400 fixture

* Comments from review

* actually commit the remove

kasa/smartbulb.py

@@ -172,6 +172,12 @@ class SmartBulb(SmartDevice):
 
         return light_state
 
+    @property  # type: ignore
+    @requires_update
+    def has_effects(self) -> bool:
+        """Return True if the device supports effects."""
+        return "lighting_effect_state" in self.sys_info
+
     async def get_light_details(self) -> Dict[str, int]:
         """Return light details.