Use angle state class for heading sensor

Author: nebhale

lib/teslamate/mqtt/pubsub/home_assistant.ex

@@ -603,7 +603,7 @@ defmodule TeslaMate.Mqtt.PubSub.HomeAssistant do
        %{
          state_topic_key: :heading,
          name: "Heading",
-         state_class: "measurement",
+         state_class: "measurement_angle",
          unit_of_measurement: "°",
          suggested_display_precision: 0,
          icon: "mdi:compass"

test/teslamate/mqtt/pubsub/home_assistant_test.exs

@@ -420,6 +420,7 @@ defmodule TeslaMate.Mqtt.PubSub.HomeAssistantTest do
     sensor = %{"platform" => "sensor"}
     measurement = Map.put(sensor, "state_class", "measurement")
     integer_measurement = Map.put(measurement, "suggested_display_precision", 0)
+    integer_angle_measurement = Map.put(integer_measurement, "state_class", "measurement_angle")
 
     distance =
       Map.merge(integer_measurement, %{
@@ -485,7 +486,7 @@ defmodule TeslaMate.Mqtt.PubSub.HomeAssistantTest do
          })},
       "heading" =>
         {"heading",
-         Map.merge(integer_measurement, %{
+         Map.merge(integer_angle_measurement, %{
            "name" => "Heading",
            "unit_of_measurement" => "°",
            "icon" => "mdi:compass"