Resolve "Enable Standard Point Positioning (SPP) computation"

Closes #2 (closed)

include/gnss_utils/gnss_utils.h

@@ -14,6 +14,8 @@ extern "C"
 
 namespace GNSSUtils
 {
-  static int getPos(Observations obs, Navigation nav, sol_t sol);
+  int getPos(const std::shared_ptr<Observations> & _observations,
+            const std::shared_ptr<Navigation> & _navigation,
+            sol_t & _sol);
 }
 #endif