Resolve "Renaming accoding to WOLF conventions"

Closes #5 (closed)

include/gnss_utils/navigation.h

-#ifndef NAVIGATION_H
-#define NAVIGATION_H
+#ifndef INCLUDE_GNSS_UTILS_NAVIGATION_H_
+#define INCLUDE_GNSS_UTILS_NAVIGATION_H_
 
 #include <vector>
 #include <iostream>
@@ -362,4 +362,4 @@ inline void Navigation::freeNavArrays(nav_t& nav)
 }
 
 }  // namespace GnssUtils
-#endif
+#endif  // INCLUDE_GNSS_UTILS_NAVIGATION_H_