GPS implementation (#216)

Implemented basic GPS support:
- GPS HAL
- GPS Service
- GPS Settings app

TactilityHeadless/Source/service/gps/Gps.cpp

@@ -0,0 +1,38 @@
+#include "Tactility/service/ServiceManifest.h"
+#include "Tactility/service/ServiceRegistry.h"
+#include "Tactility/service/gps/GpsService.h"
+
+using tt::hal::gps::GpsDevice;
+
+namespace tt::service::gps {
+
+extern ServiceManifest manifest;
+
+static std::shared_ptr<GpsService> findGpsService() {
+    auto service = findServiceById(manifest.id);
+    assert(service != nullptr);
+    return std::static_pointer_cast<GpsService>(service);
+}
+
+
+void addGpsDevice(const std::shared_ptr<GpsDevice>& device) {
+    return findGpsService()->addGpsDevice(device);
+}
+
+void removeGpsDevice(const std::shared_ptr<GpsDevice>& device) {
+    return findGpsService()->removeGpsDevice(device);
+}
+
+bool startReceiving() {
+    return findGpsService()->startReceiving();
+}
+
+void stopReceiving() {
+    findGpsService()->stopReceiving();
+}
+
+bool isReceiving() {
+    return findGpsService()->isReceiving();
+}
+
+} // namespace tt::service::gps