[platform] Separete the location_service lib

Signed-off-by: Ferenc Géczi <ferenc.gm@gmail.com>

platform/location_service/location_service.hpp

@@ -0,0 +1,32 @@
+#pragma once
+
+#include "platform/location.hpp"
+
+namespace location
+{
+
+class LocationObserver
+{
+public:
+  virtual void OnLocationError(TLocationError errorCode) = 0;
+  virtual void OnLocationUpdated(GpsInfo const & info) = 0;
+protected:
+  virtual ~LocationObserver() = default;
+};
+
+class LocationService
+{
+protected:
+  LocationObserver & m_observer;
+
+public:
+  LocationService(LocationObserver & observer) : m_observer(observer) {}
+  virtual ~LocationService() = default;
+
+  virtual void Start() = 0;
+  virtual void Stop() = 0;
+};
+
+} // namespace location
+
+std::unique_ptr<location::LocationService> CreateDesktopLocationService(location::LocationObserver & observer);