INA260 + INA219 sensor support (#1501)

* INA219 + INA260 support in telemetry

* Protobuf update

* Fixes + debug statement

* Fix size

* Fix conversion from mv

* Added getRegisterValue for i2cscan

src/modules/Telemetry/Sensor/INA219Sensor.cpp

@@ -0,0 +1,30 @@
+#include "../mesh/generated/telemetry.pb.h"
+#include "configuration.h"
+#include "TelemetrySensor.h"
+#include "INA219Sensor.h"
+#include <Adafruit_INA219.h>
+
+INA219Sensor::INA219Sensor() : 
+    TelemetrySensor(TelemetrySensorType_INA219, "INA219") 
+{
+}
+
+int32_t INA219Sensor::runOnce() {
+    DEBUG_MSG("Init sensor: %s\n", sensorName);
+    if (!hasSensor()) {
+        return DEFAULT_SENSOR_MINIMUM_WAIT_TIME_BETWEEN_READS;
+    }
+    ina219 = Adafruit_INA219(nodeTelemetrySensorsMap[sensorType]);
+    status = ina219.begin();
+    return initI2CSensor();
+}
+
+void INA219Sensor::setup() 
+{
+}
+
+bool INA219Sensor::getMetrics(Telemetry *measurement) {
+    measurement->variant.environment_metrics.voltage = ina219.getBusVoltage_V();
+    measurement->variant.environment_metrics.current = ina219.getCurrent_mA();
+    return true;
+}