Create common interfaces for remaining device types (#895)

Introduce common module interfaces across smart and iot devices and provide better typing implementation for getting modules to support this.

kasa/interfaces/led.py

@@ -0,0 +1,38 @@
+"""Module for base light effect module."""
+
+from __future__ import annotations
+
+from abc import ABC, abstractmethod
+
+from ..feature import Feature
+from ..module import Module
+
+
+class Led(Module, ABC):
+    """Base interface to represent a LED module."""
+
+    def _initialize_features(self):
+        """Initialize features."""
+        device = self._device
+        self._add_feature(
+            Feature(
+                device=device,
+                container=self,
+                name="LED",
+                id="led",
+                icon="mdi:led",
+                attribute_getter="led",
+                attribute_setter="set_led",
+                type=Feature.Type.Switch,
+                category=Feature.Category.Config,
+            )
+        )
+
+    @property
+    @abstractmethod
+    def led(self) -> bool:
+        """Return current led status."""
+
+    @abstractmethod
+    async def set_led(self, enable: bool) -> None:
+        """Set led."""