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/INA260Sensor.cpp

@@ -0,0 +1,30 @@
+#include "../mesh/generated/telemetry.pb.h"
+#include "configuration.h"
+#include "TelemetrySensor.h"
+#include "INA260Sensor.h"
+#include <Adafruit_INA260.h>
+
+INA260Sensor::INA260Sensor() : 
+    TelemetrySensor(TelemetrySensorType_INA260, "INA260") 
+{
+}
+
+int32_t INA260Sensor::runOnce() {
+    DEBUG_MSG("Init sensor: %s\n", sensorName);
+    if (!hasSensor()) {
+        return DEFAULT_SENSOR_MINIMUM_WAIT_TIME_BETWEEN_READS;
+    }
+    status = ina260.begin(nodeTelemetrySensorsMap[sensorType]);
+    return initI2CSensor();
+}
+
+void INA260Sensor::setup() 
+{
+}
+
+bool INA260Sensor::getMetrics(Telemetry *measurement) {
+    // mV conversion to V
+    measurement->variant.environment_metrics.voltage = ina260.readBusVoltage() / 1000;
+    measurement->variant.environment_metrics.current = ina260.readCurrent();
+    return true;
+}