Update includes to to be relative to src directory

Don't use relative imports like `../foo.h` as those depend on the
relative position of both files. Rather than that use imports relative
to the `src` directory, which explicitly is part of the include
directories.

src/components/ble/NavigationService.cpp

@@ -16,7 +16,7 @@
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
-#include "NavigationService.h"
+#include "components/ble/NavigationService.h"
 
 #include "systemtask/SystemTask.h"