added gps support

added compass support
added ui elements for gps and compass
added support for writing sensor data

sensors/dummy/GPSSensorDummy.h

@@ -0,0 +1,46 @@
+#ifndef GPSSENSORDUMMY_H
+#define GPSSENSORDUMMY_H
+
+
+#include "../GPSSensor.h"
+#include "RandomSensor.h"
+#include <random>
+
+class GPSSensorDummy : public RandomSensor<GPSData, GPSSensor> {
+
+private:
+
+	std::thread thread;
+
+	/** hidden ctor */
+	GPSSensorDummy() : RandomSensor(Timestamp::fromMS(1000)) {
+		;
+	}
+
+public:
+
+	/** singleton access */
+	static GPSSensorDummy& get() {
+		static GPSSensorDummy gps;
+		return gps;
+	}
+
+protected:
+
+	std::minstd_rand gen;
+	std::uniform_real_distribution<float> distNoise = std::uniform_real_distribution<float>(-0.09, +0.09);
+
+	GPSData getRandomEntry() override {
+
+		const Timestamp ts = Timestamp::fromRunningTime();
+		const float lat = 49.7773992;
+		const float lon = 9.9627029;
+		const float alt = 100;
+		return GPSData(ts, lat, lon, alt);
+
+	}
+
+};
+
+
+#endif // GPSSENSORDUMMY_H