Add TemperatureRecords module (#1814)

Adds the temp_record module, exposing thermostat temperature history
oldest first, converting missing readings to None, and refreshing every
15 minutes. Includes registration, exports, its missing-fixture
fallback, and module tests.

kasa/smart/modules/temperaturerecords.py

@@ -0,0 +1,32 @@
+"""Implementation of the thermostat temperature records module."""
+
+from __future__ import annotations
+
+from datetime import timedelta
+
+from ..smartmodule import SmartModule
+
+#: Value the device uses for slots without a reading.
+NO_READING = -1000
+
+
+class TemperatureRecords(SmartModule):
+    """Implementation of the temperature history of a thermostat.
+
+    The device keeps a reading for every 15 minutes of the last 24 hours,
+    ordered oldest first, with the most recent reading last.
+    """
+
+    REQUIRED_COMPONENT = "temp_record"
+    QUERY_GETTER_NAME = "get_temperature_records"
+    INTERVAL = timedelta(minutes=15)
+    MINIMUM_UPDATE_INTERVAL_SECS = 15 * 60
+    MINIMUM_HUB_CHILD_UPDATE_INTERVAL_SECS = 15 * 60
+
+    @property
+    def temperatures(self) -> list[float | None]:
+        """Return the readings oldest first, None where there is no reading."""
+        return [
+            None if value == NO_READING else value / 10
+            for value in self.data.get("temp_data", [])
+        ]