SHTC3 Sensor (RAK-1901) support (#1800)

src/modules/Telemetry/Sensor/SHTC3Sensor.h

@@ -0,0 +1,16 @@
+#include "../mesh/generated/telemetry.pb.h"
+#include "TelemetrySensor.h"
+#include <Adafruit_SHTC3.h>
+
+class SHTC3Sensor : virtual public TelemetrySensor {
+private:
+    Adafruit_SHTC3 shtc3 = Adafruit_SHTC3();
+
+protected:
+    virtual void setup() override;
+    
+public:
+    SHTC3Sensor();
+    virtual int32_t runOnce() override;
+    virtual bool getMetrics(Telemetry *measurement) override;
+};