Add LinkieTransportV2 and basic IOT.IPCAMERA support (#1270)

Add LinkieTransportV2 transport used by kasa cameras and a basic
implementation for IOT.IPCAMERA (kasacam) devices.

---------

Co-authored-by: Zach Price <pricezt@ornl.gov>
Co-authored-by: Steven B <51370195+sdb9696@users.noreply.github.com>
Co-authored-by: Teemu Rytilahti <tpr@iki.fi>

kasa/iot/iotcamera.py

@@ -0,0 +1,42 @@
+"""Module for cameras."""
+
+from __future__ import annotations
+
+import logging
+from datetime import datetime, tzinfo
+
+from ..device_type import DeviceType
+from ..deviceconfig import DeviceConfig
+from ..protocols import BaseProtocol
+from .iotdevice import IotDevice
+
+_LOGGER = logging.getLogger(__name__)
+
+
+class IotCamera(IotDevice):
+    """Representation of a TP-Link Camera."""
+
+    def __init__(
+        self,
+        host: str,
+        *,
+        config: DeviceConfig | None = None,
+        protocol: BaseProtocol | None = None,
+    ) -> None:
+        super().__init__(host=host, config=config, protocol=protocol)
+        self._device_type = DeviceType.Camera
+
+    @property
+    def time(self) -> datetime:
+        """Get the camera's time."""
+        return datetime.fromtimestamp(self.sys_info["system_time"])
+
+    @property
+    def timezone(self) -> tzinfo:
+        """Get the camera's timezone."""
+        return None  # type: ignore
+
+    @property  # type: ignore
+    def is_on(self) -> bool:
+        """Return whether device is on."""
+        return True