Make module names consistent and remove redundant module casting (#909)

Address the inconsistent naming of smart modules by removing all "Module" suffixes and aligning filenames with class names. Removes the casting of modules to the correct module type now that is is redundant. Update the adding of iot modules to use the ModuleName class rather than a free string.

kasa/smart/modules/cloud.py

@@ -0,0 +1,42 @@
+"""Implementation of cloud module."""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from ...exceptions import SmartErrorCode
+from ...feature import Feature
+from ..smartmodule import SmartModule
+
+if TYPE_CHECKING:
+    from ..smartdevice import SmartDevice
+
+
+class Cloud(SmartModule):
+    """Implementation of cloud module."""
+
+    QUERY_GETTER_NAME = "get_connect_cloud_state"
+    REQUIRED_COMPONENT = "cloud_connect"
+
+    def __init__(self, device: SmartDevice, module: str):
+        super().__init__(device, module)
+
+        self._add_feature(
+            Feature(
+                device,
+                id="cloud_connection",
+                name="Cloud connection",
+                container=self,
+                attribute_getter="is_connected",
+                icon="mdi:cloud",
+                type=Feature.Type.BinarySensor,
+                category=Feature.Category.Info,
+            )
+        )
+
+    @property
+    def is_connected(self):
+        """Return True if device is connected to the cloud."""
+        if isinstance(self.data, SmartErrorCode):
+            return False
+        return self.data["status"] == 0