GPS implementation (#216)

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

TactilityHeadless/Private/Tactility/hal/gps/GpsInit.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include "Tactility/hal/gps/GpsDevice.h"
+
+namespace tt::hal::gps {
+
+bool init(const std::vector<GpsDevice::Configuration>& configurations);
+
+}

TactilityHeadless/Private/Tactility/service/gps/GpsService.h

@@ -0,0 +1,44 @@
+#pragma once
+
+#include "Tactility/Mutex.h"
+#include "Tactility/service/Service.h"
+#include "Tactility/hal/gps/GpsDevice.h"
+
+namespace tt::service::gps {
+
+class GpsService final : public Service {
+
+private:
+
+    struct GpsDeviceRecord {
+        std::shared_ptr<hal::gps::GpsDevice> device = nullptr;
+        hal::gps::GpsDevice::SatelliteSubscriptionId satelliteSubscriptionId = -1;
+        hal::gps::GpsDevice::LocationSubscriptionId locationSubscriptionId = -1;
+    };
+
+    Mutex mutex = Mutex(Mutex::Type::Recursive);
+    std::vector<GpsDeviceRecord> deviceRecords;
+    bool receiving = false;
+
+    bool startGpsDevice(GpsDeviceRecord& deviceRecord);
+    static bool stopGpsDevice(GpsDeviceRecord& deviceRecord);
+
+    GpsDeviceRecord* _Nullable findGpsRecord(const std::shared_ptr<hal::gps::GpsDevice>& record);
+
+    void onSatelliteInfo(hal::Device::Id deviceId, const minmea_sat_info& info);
+    void onRmcSentence(hal::Device::Id deviceId, const minmea_sentence_rmc& rmc);
+
+public:
+
+    void onStart(tt::service::ServiceContext &serviceContext) final;
+    void onStop(tt::service::ServiceContext &serviceContext) final;
+
+    void addGpsDevice(const std::shared_ptr<hal::gps::GpsDevice>& device);
+    void removeGpsDevice(const std::shared_ptr<hal::gps::GpsDevice>& device);
+
+    bool startReceiving();
+    void stopReceiving();
+    bool isReceiving();
+};
+
+} // tt::hal::gps