java: Created a general interface that is no longer included in each package and updated examples

Signed-off-by: Bogdan Ichim <bogdan.ichim@rinftech.com>
Signed-off-by: Stefan Andritoiu <stefan.andritoiu@gmail.com>

src/hlg150h/javaupm_hlg150h.i

@@ -1,13 +1,17 @@
 %module javaupm_hlg150h
+
 %include "../upm.i"
-
-%include "../interfaces/javaupm_iLightController.i"
-
 %include "arrays_java.i";
 %include "../java_buffer.i"
 %include "cpointer.i"
 %include "typemaps.i"
 
+%import "../interfaces/javaupm_iLightController.i"
+
+%typemap(javaimports) SWIGTYPE %{
+import upm_interfaces.*;
+%}
+
 %{
     #include "hlg150h.hpp"
 %}