fix detection of lark weather station and add rain sensor (#5874)

* fix detection of lark weather station
* fix unit tests and add support for Dfrobot rain gauge
* fix name display on bootup
* fix gauge init logic
* trunk fmt

src/modules/Telemetry/Sensor/DFRobotGravitySensor.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#ifndef _MT_DFROBOTGRAVITYSENSOR_H
+#define _MT_DFROBOTGRAVITYSENSOR_H
+#include "configuration.h"
+
+#if !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR
+
+#include "../mesh/generated/meshtastic/telemetry.pb.h"
+#include "TelemetrySensor.h"
+#include <DFRobot_RainfallSensor.h>
+#include <string>
+
+class DFRobotGravitySensor : public TelemetrySensor
+{
+  private:
+    DFRobot_RainfallSensor_I2C gravity = DFRobot_RainfallSensor_I2C(nodeTelemetrySensorsMap[sensorType].second);
+
+  protected:
+    virtual void setup() override;
+
+  public:
+    DFRobotGravitySensor();
+    virtual int32_t runOnce() override;
+    virtual bool getMetrics(meshtastic_Telemetry *measurement) override;
+};
+
+#endif
+#endif