support sensor name mapping

pkg/ambient/config/config.go

@@ -33,4 +33,14 @@ type WeatherStation struct {
 	// Check weather.WeatherUpdateField for options
 	KeepMetrics []string `yaml:"keepMetrics"`
 	DropMetrics []string `yaml:"dropMetrics"`
+
+	// Relabels battery and sensor names
+	// Temp+Humidity Sensors:
+	//   - TempHumiditySensor[1-8]
+	// Batteries:
+	//   - IndoorSensor
+	//   - OutdoorSensor
+	//   - RainSensor
+	//   - CO2Sensor
+	SensorMappings map[string]string `yaml:"sensorMappings"`
 }